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Finding the Fourth Proportional to 160,417.78, 240,543.61 and 85,517.80

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Solution

The fourth proportional to 160,417.78, 240,543.61 and 85,517.80 is: 128,232.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,417.78 : 240,543.61 = 85,517.80 : x
  2. Step 2: Convert to fraction form
    160,417.78/240,543.61 = 85,517.80/x
  3. Step 3: Cross multiply
    160,417.78x = 240,543.61 × 85,517.80
  4. Step 4: Simplify right side
    160,417.78x = 20,570,760,331.26
  5. Step 5: Solve for x
    x = 20,570,760,331.26/160,417.78
  6. Step 6: Final answer
    x = 128,232.42

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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.