Home / 154,129.20-231,193.80-112,657.20

Finding the Fourth Proportional to 154,129.20, 231,193.80 and 112,657.20

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Solution

The fourth proportional to 154,129.20, 231,193.80 and 112,657.20 is: 168,985.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,129.20 : 231,193.80 = 112,657.20 : x
  2. Step 2: Convert to fraction form
    154,129.20/231,193.80 = 112,657.20/x
  3. Step 3: Cross multiply
    154,129.20x = 231,193.80 × 112,657.20
  4. Step 4: Simplify right side
    154,129.20x = 26,045,646,165.36
  5. Step 5: Solve for x
    x = 26,045,646,165.36/154,129.20
  6. Step 6: Final answer
    x = 168,985.80

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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.