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Finding the Fourth Proportional to 148,419.20, 204,830.16 and 91,848.80

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Solution

The fourth proportional to 148,419.20, 204,830.16 and 91,848.80 is: 126,758.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,419.20 : 204,830.16 = 91,848.80 : x
  2. Step 2: Convert to fraction form
    148,419.20/204,830.16 = 91,848.80/x
  3. Step 3: Cross multiply
    148,419.20x = 204,830.16 × 91,848.80
  4. Step 4: Simplify right side
    148,419.20x = 18,813,404,399.81
  5. Step 5: Solve for x
    x = 18,813,404,399.81/148,419.20
  6. Step 6: Final answer
    x = 126,758.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.