Home / 131,989.92-182,129.76-84,271.20

Finding the Fourth Proportional to 131,989.92, 182,129.76 and 84,271.20

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Solution

The fourth proportional to 131,989.92, 182,129.76 and 84,271.20 is: 116,283.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,989.92 : 182,129.76 = 84,271.20 : x
  2. Step 2: Convert to fraction form
    131,989.92/182,129.76 = 84,271.20/x
  3. Step 3: Cross multiply
    131,989.92x = 182,129.76 × 84,271.20
  4. Step 4: Simplify right side
    131,989.92x = 15,348,293,430.91
  5. Step 5: Solve for x
    x = 15,348,293,430.91/131,989.92
  6. Step 6: Final answer
    x = 116,283.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.