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Finding the Fourth Proportional to 123,920.08, 185,868.72 and 40,814.08

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Solution

The fourth proportional to 123,920.08, 185,868.72 and 40,814.08 is: 61,217.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,920.08 : 185,868.72 = 40,814.08 : x
  2. Step 2: Convert to fraction form
    123,920.08/185,868.72 = 40,814.08/x
  3. Step 3: Cross multiply
    123,920.08x = 185,868.72 × 40,814.08
  4. Step 4: Simplify right side
    123,920.08x = 7,586,060,807.58
  5. Step 5: Solve for x
    x = 7,586,060,807.58/123,920.08
  6. Step 6: Final answer
    x = 61,217.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.