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Finding the Fourth Proportional to 123,691,345.68, 185,375,617.92 and 69,101,726.16

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Solution

The fourth proportional to 123,691,345.68, 185,375,617.92 and 69,101,726.16 is: 103,562,420.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,691,345.68 : 185,375,617.92 = 69,101,726.16 : x
  2. Step 2: Convert to fraction form
    123,691,345.68/185,375,617.92 = 69,101,726.16/x
  3. Step 3: Cross multiply
    123,691,345.68x = 185,375,617.92 × 69,101,726.16
  4. Step 4: Simplify right side
    123,691,345.68x = 12,809,775,185,903,118
  5. Step 5: Solve for x
    x = 12,809,775,185,903,118/123,691,345.68
  6. Step 6: Final answer
    x = 103,562,420.76

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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.