Home / 156,853.20-235,279.80-83,125.20

Finding the Fourth Proportional to 156,853.20, 235,279.80 and 83,125.20

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Solution

The fourth proportional to 156,853.20, 235,279.80 and 83,125.20 is: 124,687.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,853.20 : 235,279.80 = 83,125.20 : x
  2. Step 2: Convert to fraction form
    156,853.20/235,279.80 = 83,125.20/x
  3. Step 3: Cross multiply
    156,853.20x = 235,279.80 × 83,125.20
  4. Step 4: Simplify right side
    156,853.20x = 19,557,680,430.96
  5. Step 5: Solve for x
    x = 19,557,680,430.96/156,853.20
  6. Step 6: Final answer
    x = 124,687.80

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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.