Home / 156,629.30-234,425.55-121,378.10

Finding the Fourth Proportional to 156,629.30, 234,425.55 and 121,378.10

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Solution

The fourth proportional to 156,629.30, 234,425.55 and 121,378.10 is: 181,665.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.30 : 234,425.55 = 121,378.10 : x
  2. Step 2: Convert to fraction form
    156,629.30/234,425.55 = 121,378.10/x
  3. Step 3: Cross multiply
    156,629.30x = 234,425.55 × 121,378.10
  4. Step 4: Simplify right side
    156,629.30x = 28,454,127,850.46
  5. Step 5: Solve for x
    x = 28,454,127,850.46/156,629.30
  6. Step 6: Final answer
    x = 181,665.42

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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.