Home / 90,502,992.80-135,754,489.20-83,417,112.80

Finding the Fourth Proportional to 90,502,992.80, 135,754,489.20 and 83,417,112.80

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Solution

The fourth proportional to 90,502,992.80, 135,754,489.20 and 83,417,112.80 is: 125,125,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,502,992.80 : 135,754,489.20 = 83,417,112.80 : x
  2. Step 2: Convert to fraction form
    90,502,992.80/135,754,489.20 = 83,417,112.80/x
  3. Step 3: Cross multiply
    90,502,992.80x = 135,754,489.20 × 83,417,112.80
  4. Step 4: Simplify right side
    90,502,992.80x = 11,324,247,538,702,780
  5. Step 5: Solve for x
    x = 11,324,247,538,702,780/90,502,992.80
  6. Step 6: Final answer
    x = 125,125,669.20

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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.