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Finding the Fourth Proportional to 178,045.60, 266,679.60 and 138,290.80

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Solution

The fourth proportional to 178,045.60, 266,679.60 and 138,290.80 is: 207,134.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,045.60 : 266,679.60 = 138,290.80 : x
  2. Step 2: Convert to fraction form
    178,045.60/266,679.60 = 138,290.80/x
  3. Step 3: Cross multiply
    178,045.60x = 266,679.60 × 138,290.80
  4. Step 4: Simplify right side
    178,045.60x = 36,879,335,227.68
  5. Step 5: Solve for x
    x = 36,879,335,227.68/178,045.60
  6. Step 6: Final answer
    x = 207,134.21

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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.