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Finding the Fourth Proportional to 123,615.70, 185,342.55 and 48,690.70

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Solution

The fourth proportional to 123,615.70, 185,342.55 and 48,690.70 is: 73,004.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,615.70 : 185,342.55 = 48,690.70 : x
  2. Step 2: Convert to fraction form
    123,615.70/185,342.55 = 48,690.70/x
  3. Step 3: Cross multiply
    123,615.70x = 185,342.55 × 48,690.70
  4. Step 4: Simplify right side
    123,615.70x = 9,024,458,499.29
  5. Step 5: Solve for x
    x = 9,024,458,499.29/123,615.70
  6. Step 6: Final answer
    x = 73,004.15

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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.