Home / 122,499,242.38-169,012,689.11-72,899,853.85

Finding the Fourth Proportional to 122,499,242.38, 169,012,689.11 and 72,899,853.85

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Solution

The fourth proportional to 122,499,242.38, 169,012,689.11 and 72,899,853.85 is: 100,580,216.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,499,242.38 : 169,012,689.11 = 72,899,853.85 : x
  2. Step 2: Convert to fraction form
    122,499,242.38/169,012,689.11 = 72,899,853.85/x
  3. Step 3: Cross multiply
    122,499,242.38x = 169,012,689.11 × 72,899,853.85
  4. Step 4: Simplify right side
    122,499,242.38x = 12,321,000,334,083,930
  5. Step 5: Solve for x
    x = 12,321,000,334,083,930/122,499,242.38
  6. Step 6: Final answer
    x = 100,580,216.62

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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.