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Finding the Fourth Proportional to 123,486.80, 185,225.04 and 52,389.92

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Solution

The fourth proportional to 123,486.80, 185,225.04 and 52,389.92 is: 78,582.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,486.80 : 185,225.04 = 52,389.92 : x
  2. Step 2: Convert to fraction form
    123,486.80/185,225.04 = 52,389.92/x
  3. Step 3: Cross multiply
    123,486.80x = 185,225.04 × 52,389.92
  4. Step 4: Simplify right side
    123,486.80x = 9,703,925,027.60
  5. Step 5: Solve for x
    x = 9,703,925,027.60/123,486.80
  6. Step 6: Final answer
    x = 78,582.69

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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.