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Finding the Fourth Proportional to 99,618.12, 137,472.12 and 54,296.10

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Solution

The fourth proportional to 99,618.12, 137,472.12 and 54,296.10 is: 74,928.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,618.12 : 137,472.12 = 54,296.10 : x
  2. Step 2: Convert to fraction form
    99,618.12/137,472.12 = 54,296.10/x
  3. Step 3: Cross multiply
    99,618.12x = 137,472.12 × 54,296.10
  4. Step 4: Simplify right side
    99,618.12x = 7,464,200,178.34
  5. Step 5: Solve for x
    x = 7,464,200,178.34/99,618.12
  6. Step 6: Final answer
    x = 74,928.14

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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.