Home / 168,921.40-253,382.10-155,143.30

Finding the Fourth Proportional to 168,921.40, 253,382.10 and 155,143.30

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Solution

The fourth proportional to 168,921.40, 253,382.10 and 155,143.30 is: 232,714.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,921.40 : 253,382.10 = 155,143.30 : x
  2. Step 2: Convert to fraction form
    168,921.40/253,382.10 = 155,143.30/x
  3. Step 3: Cross multiply
    168,921.40x = 253,382.10 × 155,143.30
  4. Step 4: Simplify right side
    168,921.40x = 39,310,535,154.93
  5. Step 5: Solve for x
    x = 39,310,535,154.93/168,921.40
  6. Step 6: Final answer
    x = 232,714.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.