Home / 156,972.66-216,619.18-85,352.05

Finding the Fourth Proportional to 156,972.66, 216,619.18 and 85,352.05

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Solution

The fourth proportional to 156,972.66, 216,619.18 and 85,352.05 is: 117,784.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,972.66 : 216,619.18 = 85,352.05 : x
  2. Step 2: Convert to fraction form
    156,972.66/216,619.18 = 85,352.05/x
  3. Step 3: Cross multiply
    156,972.66x = 216,619.18 × 85,352.05
  4. Step 4: Simplify right side
    156,972.66x = 18,488,891,082.32
  5. Step 5: Solve for x
    x = 18,488,891,082.32/156,972.66
  6. Step 6: Final answer
    x = 117,784.15

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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.