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Finding the Fourth Proportional to 177,638.88, 266,642.88 and 118,885.12

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Solution

The fourth proportional to 177,638.88, 266,642.88 and 118,885.12 is: 178,451.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,638.88 : 266,642.88 = 118,885.12 : x
  2. Step 2: Convert to fraction form
    177,638.88/266,642.88 = 118,885.12/x
  3. Step 3: Cross multiply
    177,638.88x = 266,642.88 × 118,885.12
  4. Step 4: Simplify right side
    177,638.88x = 31,699,870,785.95
  5. Step 5: Solve for x
    x = 31,699,870,785.95/177,638.88
  6. Step 6: Final answer
    x = 178,451.20

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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.