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Finding the Fourth Proportional to 123,618.80, 185,428.20 and 92,514.80

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Solution

The fourth proportional to 123,618.80, 185,428.20 and 92,514.80 is: 138,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,618.80 : 185,428.20 = 92,514.80 : x
  2. Step 2: Convert to fraction form
    123,618.80/185,428.20 = 92,514.80/x
  3. Step 3: Cross multiply
    123,618.80x = 185,428.20 × 92,514.80
  4. Step 4: Simplify right side
    123,618.80x = 17,154,852,837.36
  5. Step 5: Solve for x
    x = 17,154,852,837.36/123,618.80
  6. Step 6: Final answer
    x = 138,772.20

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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.