Home / 138,105,230.40-190,571,649.21-76,221,583.20

Finding the Fourth Proportional to 138,105,230.40, 190,571,649.21 and 76,221,583.20

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Solution

The fourth proportional to 138,105,230.40, 190,571,649.21 and 76,221,583.20 is: 105,178,296.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,105,230.40 : 190,571,649.21 = 76,221,583.20 : x
  2. Step 2: Convert to fraction form
    138,105,230.40/190,571,649.21 = 76,221,583.20/x
  3. Step 3: Cross multiply
    138,105,230.40x = 190,571,649.21 × 76,221,583.20
  4. Step 4: Simplify right side
    138,105,230.40x = 14,525,672,815,821,230
  5. Step 5: Solve for x
    x = 14,525,672,815,821,230/138,105,230.40
  6. Step 6: Final answer
    x = 105,178,296.10

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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.