Home / 156,929.36-216,559.96-85,311.18

Finding the Fourth Proportional to 156,929.36, 216,559.96 and 85,311.18

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Solution

The fourth proportional to 156,929.36, 216,559.96 and 85,311.18 is: 117,728.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.36 : 216,559.96 = 85,311.18 : x
  2. Step 2: Convert to fraction form
    156,929.36/216,559.96 = 85,311.18/x
  3. Step 3: Cross multiply
    156,929.36x = 216,559.96 × 85,311.18
  4. Step 4: Simplify right side
    156,929.36x = 18,474,985,728.35
  5. Step 5: Solve for x
    x = 18,474,985,728.35/156,929.36
  6. Step 6: Final answer
    x = 117,728.04

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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.