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Finding the Fourth Proportional to 99,284.80, 148,927.20 and 25,412.80

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Solution

The fourth proportional to 99,284.80, 148,927.20 and 25,412.80 is: 38,119.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,284.80 : 148,927.20 = 25,412.80 : x
  2. Step 2: Convert to fraction form
    99,284.80/148,927.20 = 25,412.80/x
  3. Step 3: Cross multiply
    99,284.80x = 148,927.20 × 25,412.80
  4. Step 4: Simplify right side
    99,284.80x = 3,784,657,148.16
  5. Step 5: Solve for x
    x = 3,784,657,148.16/99,284.80
  6. Step 6: Final answer
    x = 38,119.20

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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.