Home / 98,621.60-148,082.16-86,133.92

Finding the Fourth Proportional to 98,621.60, 148,082.16 and 86,133.92

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Solution

The fourth proportional to 98,621.60, 148,082.16 and 86,133.92 is: 129,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,621.60 : 148,082.16 = 86,133.92 : x
  2. Step 2: Convert to fraction form
    98,621.60/148,082.16 = 86,133.92/x
  3. Step 3: Cross multiply
    98,621.60x = 148,082.16 × 86,133.92
  4. Step 4: Simplify right side
    98,621.60x = 12,754,896,922.87
  5. Step 5: Solve for x
    x = 12,754,896,922.87/98,621.60
  6. Step 6: Final answer
    x = 129,331.68

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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.