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Finding the Fourth Proportional to 94,460.80, 141,691.20 and 79,427.20

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Solution

The fourth proportional to 94,460.80, 141,691.20 and 79,427.20 is: 119,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    94,460.80 : 141,691.20 = 79,427.20 : x
  2. Step 2: Convert to fraction form
    94,460.80/141,691.20 = 79,427.20/x
  3. Step 3: Cross multiply
    94,460.80x = 141,691.20 × 79,427.20
  4. Step 4: Simplify right side
    94,460.80x = 11,254,135,280.64
  5. Step 5: Solve for x
    x = 11,254,135,280.64/94,460.80
  6. Step 6: Final answer
    x = 119,140.80

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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.