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Finding the Fourth Proportional to 99,004.80, 148,385.70 and 67,414.80

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Solution

The fourth proportional to 99,004.80, 148,385.70 and 67,414.80 is: 101,039.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,004.80 : 148,385.70 = 67,414.80 : x
  2. Step 2: Convert to fraction form
    99,004.80/148,385.70 = 67,414.80/x
  3. Step 3: Cross multiply
    99,004.80x = 148,385.70 × 67,414.80
  4. Step 4: Simplify right side
    99,004.80x = 10,003,392,288.36
  5. Step 5: Solve for x
    x = 10,003,392,288.36/99,004.80
  6. Step 6: Final answer
    x = 101,039.47

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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.