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Finding the Fourth Proportional to 99,663.34, 149,325.84 and 60,137.40

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Solution

The fourth proportional to 99,663.34, 149,325.84 and 60,137.40 is: 90,104.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,663.34 : 149,325.84 = 60,137.40 : x
  2. Step 2: Convert to fraction form
    99,663.34/149,325.84 = 60,137.40/x
  3. Step 3: Cross multiply
    99,663.34x = 149,325.84 × 60,137.40
  4. Step 4: Simplify right side
    99,663.34x = 8,980,067,770.42
  5. Step 5: Solve for x
    x = 8,980,067,770.42/99,663.34
  6. Step 6: Final answer
    x = 90,104.02

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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.