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Finding the Fourth Proportional to 123,387.47, 185,157.35 and 48,494.47

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Solution

The fourth proportional to 123,387.47, 185,157.35 and 48,494.47 is: 72,771.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,387.47 : 185,157.35 = 48,494.47 : x
  2. Step 2: Convert to fraction form
    123,387.47/185,157.35 = 48,494.47/x
  3. Step 3: Cross multiply
    123,387.47x = 185,157.35 × 48,494.47
  4. Step 4: Simplify right side
    123,387.47x = 8,979,106,386.60
  5. Step 5: Solve for x
    x = 8,979,106,386.60/123,387.47
  6. Step 6: Final answer
    x = 72,771.62

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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.