Home / 138,270.32-190,800.79-77,011.84

Finding the Fourth Proportional to 138,270.32, 190,800.79 and 77,011.84

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Solution

The fourth proportional to 138,270.32, 190,800.79 and 77,011.84 is: 106,269.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,270.32 : 190,800.79 = 77,011.84 : x
  2. Step 2: Convert to fraction form
    138,270.32/190,800.79 = 77,011.84/x
  3. Step 3: Cross multiply
    138,270.32x = 190,800.79 × 77,011.84
  4. Step 4: Simplify right side
    138,270.32x = 14,693,919,911.35
  5. Step 5: Solve for x
    x = 14,693,919,911.35/138,270.32
  6. Step 6: Final answer
    x = 106,269.52

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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.