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Finding the Fourth Proportional to 99,349.20, 148,698 and 54,301.55

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Solution

The fourth proportional to 99,349.20, 148,698 and 54,301.55 is: 81,274.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,349.20 : 148,698 = 54,301.55 : x
  2. Step 2: Convert to fraction form
    99,349.20/148,698 = 54,301.55/x
  3. Step 3: Cross multiply
    99,349.20x = 148,698 × 54,301.55
  4. Step 4: Simplify right side
    99,349.20x = 8,074,531,138.41
  5. Step 5: Solve for x
    x = 8,074,531,138.41/99,349.20
  6. Step 6: Final answer
    x = 81,274.24

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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.