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Finding the Fourth Proportional to 118,398.40, 176,733.90 and 103,451.47

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Solution

The fourth proportional to 118,398.40, 176,733.90 and 103,451.47 is: 154,422.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,398.40 : 176,733.90 = 103,451.47 : x
  2. Step 2: Convert to fraction form
    118,398.40/176,733.90 = 103,451.47/x
  3. Step 3: Cross multiply
    118,398.40x = 176,733.90 × 103,451.47
  4. Step 4: Simplify right side
    118,398.40x = 18,283,381,753.83
  5. Step 5: Solve for x
    x = 18,283,381,753.83/118,398.40
  6. Step 6: Final answer
    x = 154,422.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.