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Finding the Fourth Proportional to 99,442.56, 149,214.56 and 55,060.80

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Solution

The fourth proportional to 99,442.56, 149,214.56 and 55,060.80 is: 82,619.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,442.56 : 149,214.56 = 55,060.80 : x
  2. Step 2: Convert to fraction form
    99,442.56/149,214.56 = 55,060.80/x
  3. Step 3: Cross multiply
    99,442.56x = 149,214.56 × 55,060.80
  4. Step 4: Simplify right side
    99,442.56x = 8,215,873,045.25
  5. Step 5: Solve for x
    x = 8,215,873,045.25/99,442.56
  6. Step 6: Final answer
    x = 82,619.28

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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.