Home / 138,787,262,571.40-191,455,934,819.26-90,643,486,954.59

Finding the Fourth Proportional to 138,787,262,571.40, 191,455,934,819.26 and 90,643,486,954.59

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Solution

The fourth proportional to 138,787,262,571.40, 191,455,934,819.26 and 90,643,486,954.59 is: 125,041,975,817.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,787,262,571.40 : 191,455,934,819.26 = 90,643,486,954.59 : x
  2. Step 2: Convert to fraction form
    138,787,262,571.40/191,455,934,819.26 = 90,643,486,954.59/x
  3. Step 3: Cross multiply
    138,787,262,571.40x = 191,455,934,819.26 × 90,643,486,954.59
  4. Step 4: Simplify right side
    138,787,262,571.40x = 17,354,233,530,169,002,295,296
  5. Step 5: Solve for x
    x = 17,354,233,530,169,002,295,296/138,787,262,571.40
  6. Step 6: Final answer
    x = 125,041,975,817.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.