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Finding the Fourth Proportional to 98,723.80, 148,085.70 and 39,601.90

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Solution

The fourth proportional to 98,723.80, 148,085.70 and 39,601.90 is: 59,402.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,723.80 : 148,085.70 = 39,601.90 : x
  2. Step 2: Convert to fraction form
    98,723.80/148,085.70 = 39,601.90/x
  3. Step 3: Cross multiply
    98,723.80x = 148,085.70 × 39,601.90
  4. Step 4: Simplify right side
    98,723.80x = 5,864,475,082.83
  5. Step 5: Solve for x
    x = 5,864,475,082.83/98,723.80
  6. Step 6: Final answer
    x = 59,402.85

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1.5x scale

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.