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Finding the Fourth Proportional to 99,404.40, 148,991.40 and 40,210.80

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Solution

The fourth proportional to 99,404.40, 148,991.40 and 40,210.80 is: 60,269.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,404.40 : 148,991.40 = 40,210.80 : x
  2. Step 2: Convert to fraction form
    99,404.40/148,991.40 = 40,210.80/x
  3. Step 3: Cross multiply
    99,404.40x = 148,991.40 × 40,210.80
  4. Step 4: Simplify right side
    99,404.40x = 5,991,063,387.12
  5. Step 5: Solve for x
    x = 5,991,063,387.12/99,404.40
  6. Step 6: Final answer
    x = 60,269.60

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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.