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Finding the Fourth Proportional to 98,639.20, 147,958.80 and 36,301.60

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Solution

The fourth proportional to 98,639.20, 147,958.80 and 36,301.60 is: 54,452.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,639.20 : 147,958.80 = 36,301.60 : x
  2. Step 2: Convert to fraction form
    98,639.20/147,958.80 = 36,301.60/x
  3. Step 3: Cross multiply
    98,639.20x = 147,958.80 × 36,301.60
  4. Step 4: Simplify right side
    98,639.20x = 5,371,141,174.08
  5. Step 5: Solve for x
    x = 5,371,141,174.08/98,639.20
  6. Step 6: Final answer
    x = 54,452.40

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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.