Home / 156,741.39-216,301.17-85,121.92

Finding the Fourth Proportional to 156,741.39, 216,301.17 and 85,121.92

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Solution

The fourth proportional to 156,741.39, 216,301.17 and 85,121.92 is: 117,467.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,741.39 : 216,301.17 = 85,121.92 : x
  2. Step 2: Convert to fraction form
    156,741.39/216,301.17 = 85,121.92/x
  3. Step 3: Cross multiply
    156,741.39x = 216,301.17 × 85,121.92
  4. Step 4: Simplify right side
    156,741.39x = 18,411,970,888.65
  5. Step 5: Solve for x
    x = 18,411,970,888.65/156,741.39
  6. Step 6: Final answer
    x = 117,467.19

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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.