Home / 99,697.20-149,545.80-98,660.40

Finding the Fourth Proportional to 99,697.20, 149,545.80 and 98,660.40

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Solution

The fourth proportional to 99,697.20, 149,545.80 and 98,660.40 is: 147,990.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,697.20 : 149,545.80 = 98,660.40 : x
  2. Step 2: Convert to fraction form
    99,697.20/149,545.80 = 98,660.40/x
  3. Step 3: Cross multiply
    99,697.20x = 149,545.80 × 98,660.40
  4. Step 4: Simplify right side
    99,697.20x = 14,754,248,446.32
  5. Step 5: Solve for x
    x = 14,754,248,446.32/99,697.20
  6. Step 6: Final answer
    x = 147,990.60

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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.