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Finding the Fourth Proportional to 98,679.40, 148,019.10 and 88,311.40

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Solution

The fourth proportional to 98,679.40, 148,019.10 and 88,311.40 is: 132,467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,679.40 : 148,019.10 = 88,311.40 : x
  2. Step 2: Convert to fraction form
    98,679.40/148,019.10 = 88,311.40/x
  3. Step 3: Cross multiply
    98,679.40x = 148,019.10 × 88,311.40
  4. Step 4: Simplify right side
    98,679.40x = 13,071,773,947.74
  5. Step 5: Solve for x
    x = 13,071,773,947.74/98,679.40
  6. Step 6: Final answer
    x = 132,467.10

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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.