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Finding the Fourth Proportional to 99,165.87, 136,798.22 and 63,318.21

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Solution

The fourth proportional to 99,165.87, 136,798.22 and 63,318.21 is: 87,346.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,165.87 : 136,798.22 = 63,318.21 : x
  2. Step 2: Convert to fraction form
    99,165.87/136,798.22 = 63,318.21/x
  3. Step 3: Cross multiply
    99,165.87x = 136,798.22 × 63,318.21
  4. Step 4: Simplify right side
    99,165.87x = 8,661,817,710.72
  5. Step 5: Solve for x
    x = 8,661,817,710.72/99,165.87
  6. Step 6: Final answer
    x = 87,346.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.