Home / 156,747.40-235,121.10-133,127.80

Finding the Fourth Proportional to 156,747.40, 235,121.10 and 133,127.80

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Solution

The fourth proportional to 156,747.40, 235,121.10 and 133,127.80 is: 199,691.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,747.40 : 235,121.10 = 133,127.80 : x
  2. Step 2: Convert to fraction form
    156,747.40/235,121.10 = 133,127.80/x
  3. Step 3: Cross multiply
    156,747.40x = 235,121.10 × 133,127.80
  4. Step 4: Simplify right side
    156,747.40x = 31,301,154,776.58
  5. Step 5: Solve for x
    x = 31,301,154,776.58/156,747.40
  6. Step 6: Final answer
    x = 199,691.70

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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.