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Finding the Fourth Proportional to 99,700.70, 149,186.55 and 73,456.70

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Solution

The fourth proportional to 99,700.70, 149,186.55 and 73,456.70 is: 109,916.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,700.70 : 149,186.55 = 73,456.70 : x
  2. Step 2: Convert to fraction form
    99,700.70/149,186.55 = 73,456.70/x
  3. Step 3: Cross multiply
    99,700.70x = 149,186.55 × 73,456.70
  4. Step 4: Simplify right side
    99,700.70x = 10,958,751,647.39
  5. Step 5: Solve for x
    x = 10,958,751,647.39/99,700.70
  6. Step 6: Final answer
    x = 109,916.50

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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.