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Finding the Fourth Proportional to 98,422.80, 147,634.20 and 97,839.60

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Solution

The fourth proportional to 98,422.80, 147,634.20 and 97,839.60 is: 146,759.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,422.80 : 147,634.20 = 97,839.60 : x
  2. Step 2: Convert to fraction form
    98,422.80/147,634.20 = 97,839.60/x
  3. Step 3: Cross multiply
    98,422.80x = 147,634.20 × 97,839.60
  4. Step 4: Simplify right side
    98,422.80x = 14,444,471,074.32
  5. Step 5: Solve for x
    x = 14,444,471,074.32/98,422.80
  6. Step 6: Final answer
    x = 146,759.40

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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.