Home / 156,742.56-216,301.17-85,121.04

Finding the Fourth Proportional to 156,742.56, 216,301.17 and 85,121.04

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Solution

The fourth proportional to 156,742.56, 216,301.17 and 85,121.04 is: 117,465.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,742.56 : 216,301.17 = 85,121.04 : x
  2. Step 2: Convert to fraction form
    156,742.56/216,301.17 = 85,121.04/x
  3. Step 3: Cross multiply
    156,742.56x = 216,301.17 × 85,121.04
  4. Step 4: Simplify right side
    156,742.56x = 18,411,780,543.62
  5. Step 5: Solve for x
    x = 18,411,780,543.62/156,742.56
  6. Step 6: Final answer
    x = 117,465.10

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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.