Home / 156,629.43-216,143.13-85,008.01

Finding the Fourth Proportional to 156,629.43, 216,143.13 and 85,008.01

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Solution

The fourth proportional to 156,629.43, 216,143.13 and 85,008.01 is: 117,308.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.43 : 216,143.13 = 85,008.01 : x
  2. Step 2: Convert to fraction form
    156,629.43/216,143.13 = 85,008.01/x
  3. Step 3: Cross multiply
    156,629.43x = 216,143.13 × 85,008.01
  4. Step 4: Simplify right side
    156,629.43x = 18,373,897,356.47
  5. Step 5: Solve for x
    x = 18,373,897,356.47/156,629.43
  6. Step 6: Final answer
    x = 117,308.08

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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.