Home / 99,801.20-149,455.76-66,340.10

Finding the Fourth Proportional to 99,801.20, 149,455.76 and 66,340.10

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Solution

The fourth proportional to 99,801.20, 149,455.76 and 66,340.10 is: 99,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,801.20 : 149,455.76 = 66,340.10 : x
  2. Step 2: Convert to fraction form
    99,801.20/149,455.76 = 66,340.10/x
  3. Step 3: Cross multiply
    99,801.20x = 149,455.76 × 66,340.10
  4. Step 4: Simplify right side
    99,801.20x = 9,914,910,063.98
  5. Step 5: Solve for x
    x = 9,914,910,063.98/99,801.20
  6. Step 6: Final answer
    x = 99,346.60

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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.