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Finding the Fourth Proportional to 122,854.83, 169,537.68 and 69,139.82

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Solution

The fourth proportional to 122,854.83, 169,537.68 and 69,139.82 is: 95,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,854.83 : 169,537.68 = 69,139.82 : x
  2. Step 2: Convert to fraction form
    122,854.83/169,537.68 = 69,139.82/x
  3. Step 3: Cross multiply
    122,854.83x = 169,537.68 × 69,139.82
  4. Step 4: Simplify right side
    122,854.83x = 11,721,803,830.73
  5. Step 5: Solve for x
    x = 11,721,803,830.73/122,854.83
  6. Step 6: Final answer
    x = 95,411.83

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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.