Home / 90,503,008.80-135,754,513.20-83,417,128.80

Finding the Fourth Proportional to 90,503,008.80, 135,754,513.20 and 83,417,128.80

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Solution

The fourth proportional to 90,503,008.80, 135,754,513.20 and 83,417,128.80 is: 125,125,693.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,503,008.80 : 135,754,513.20 = 83,417,128.80 : x
  2. Step 2: Convert to fraction form
    90,503,008.80/135,754,513.20 = 83,417,128.80/x
  3. Step 3: Cross multiply
    90,503,008.80x = 135,754,513.20 × 83,417,128.80
  4. Step 4: Simplify right side
    90,503,008.80x = 11,324,251,712,785,698
  5. Step 5: Solve for x
    x = 11,324,251,712,785,698/90,503,008.80
  6. Step 6: Final answer
    x = 125,125,693.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.