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Finding the Fourth Proportional to 123,612.30, 185,418.45 and 61,404.30

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Solution

The fourth proportional to 123,612.30, 185,418.45 and 61,404.30 is: 92,106.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,612.30 : 185,418.45 = 61,404.30 : x
  2. Step 2: Convert to fraction form
    123,612.30/185,418.45 = 61,404.30/x
  3. Step 3: Cross multiply
    123,612.30x = 185,418.45 × 61,404.30
  4. Step 4: Simplify right side
    123,612.30x = 11,385,490,129.34
  5. Step 5: Solve for x
    x = 11,385,490,129.34/123,612.30
  6. Step 6: Final answer
    x = 92,106.45

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1.5x scale

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.