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Finding the Fourth Proportional to 99,279.33, 137,006.39 and 53,957.43

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Solution

The fourth proportional to 99,279.33, 137,006.39 and 53,957.43 is: 74,461.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,279.33 : 137,006.39 = 53,957.43 : x
  2. Step 2: Convert to fraction form
    99,279.33/137,006.39 = 53,957.43/x
  3. Step 3: Cross multiply
    99,279.33x = 137,006.39 × 53,957.43
  4. Step 4: Simplify right side
    99,279.33x = 7,392,512,428.19
  5. Step 5: Solve for x
    x = 7,392,512,428.19/99,279.33
  6. Step 6: Final answer
    x = 74,461.75

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1.5x scale

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.