Home / 90,502,990.30-135,754,485.45-83,417,110.30

Finding the Fourth Proportional to 90,502,990.30, 135,754,485.45 and 83,417,110.30

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Solution

The fourth proportional to 90,502,990.30, 135,754,485.45 and 83,417,110.30 is: 125,125,665.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,502,990.30 : 135,754,485.45 = 83,417,110.30 : x
  2. Step 2: Convert to fraction form
    90,502,990.30/135,754,485.45 = 83,417,110.30/x
  3. Step 3: Cross multiply
    90,502,990.30x = 135,754,485.45 × 83,417,110.30
  4. Step 4: Simplify right side
    90,502,990.30x = 11,324,246,886,502,394
  5. Step 5: Solve for x
    x = 11,324,246,886,502,394/90,502,990.30
  6. Step 6: Final answer
    x = 125,125,665.45

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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.