Home / 156,871.20-235,306.80-83,143.20

Finding the Fourth Proportional to 156,871.20, 235,306.80 and 83,143.20

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Solution

The fourth proportional to 156,871.20, 235,306.80 and 83,143.20 is: 124,714.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,871.20 : 235,306.80 = 83,143.20 : x
  2. Step 2: Convert to fraction form
    156,871.20/235,306.80 = 83,143.20/x
  3. Step 3: Cross multiply
    156,871.20x = 235,306.80 × 83,143.20
  4. Step 4: Simplify right side
    156,871.20x = 19,564,160,333.76
  5. Step 5: Solve for x
    x = 19,564,160,333.76/156,871.20
  6. Step 6: Final answer
    x = 124,714.80

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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.