Home / 156,909.36-216,539.13-85,294.20

Finding the Fourth Proportional to 156,909.36, 216,539.13 and 85,294.20

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Solution

The fourth proportional to 156,909.36, 216,539.13 and 85,294.20 is: 117,708.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,909.36 : 216,539.13 = 85,294.20 : x
  2. Step 2: Convert to fraction form
    156,909.36/216,539.13 = 85,294.20/x
  3. Step 3: Cross multiply
    156,909.36x = 216,539.13 × 85,294.20
  4. Step 4: Simplify right side
    156,909.36x = 18,469,531,862.05
  5. Step 5: Solve for x
    x = 18,469,531,862.05/156,909.36
  6. Step 6: Final answer
    x = 117,708.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.