Home / 156,971.10-235,456.65-109,731.90

Finding the Fourth Proportional to 156,971.10, 235,456.65 and 109,731.90

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Solution

The fourth proportional to 156,971.10, 235,456.65 and 109,731.90 is: 164,597.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.10 : 235,456.65 = 109,731.90 : x
  2. Step 2: Convert to fraction form
    156,971.10/235,456.65 = 109,731.90/x
  3. Step 3: Cross multiply
    156,971.10x = 235,456.65 × 109,731.90
  4. Step 4: Simplify right side
    156,971.10x = 25,837,105,572.14
  5. Step 5: Solve for x
    x = 25,837,105,572.14/156,971.10
  6. Step 6: Final answer
    x = 164,597.85

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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.