Home / 156,821.85-235,351.08-72,641.08

Finding the Fourth Proportional to 156,821.85, 235,351.08 and 72,641.08

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Solution

The fourth proportional to 156,821.85, 235,351.08 and 72,641.08 is: 109,016.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,821.85 : 235,351.08 = 72,641.08 : x
  2. Step 2: Convert to fraction form
    156,821.85/235,351.08 = 72,641.08/x
  3. Step 3: Cross multiply
    156,821.85x = 235,351.08 × 72,641.08
  4. Step 4: Simplify right side
    156,821.85x = 17,096,156,364.78
  5. Step 5: Solve for x
    x = 17,096,156,364.78/156,821.85
  6. Step 6: Final answer
    x = 109,016.42

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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.