Home / 156,630.30-234,427.05-121,379.10

Finding the Fourth Proportional to 156,630.30, 234,427.05 and 121,379.10

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Solution

The fourth proportional to 156,630.30, 234,427.05 and 121,379.10 is: 181,666.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.30 : 234,427.05 = 121,379.10 : x
  2. Step 2: Convert to fraction form
    156,630.30/234,427.05 = 121,379.10/x
  3. Step 3: Cross multiply
    156,630.30x = 234,427.05 × 121,379.10
  4. Step 4: Simplify right side
    156,630.30x = 28,454,544,344.66
  5. Step 5: Solve for x
    x = 28,454,544,344.66/156,630.30
  6. Step 6: Final answer
    x = 181,666.92

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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.