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Finding the Fourth Proportional to 98,923.80, 148,385.70 and 89,074.20

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Solution

The fourth proportional to 98,923.80, 148,385.70 and 89,074.20 is: 133,611.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,923.80 : 148,385.70 = 89,074.20 : x
  2. Step 2: Convert to fraction form
    98,923.80/148,385.70 = 89,074.20/x
  3. Step 3: Cross multiply
    98,923.80x = 148,385.70 × 89,074.20
  4. Step 4: Simplify right side
    98,923.80x = 13,217,337,518.94
  5. Step 5: Solve for x
    x = 13,217,337,518.94/98,923.80
  6. Step 6: Final answer
    x = 133,611.30

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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.