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Finding the Fourth Proportional to 99,178.08, 136,866.72 and 54,466.08

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Solution

The fourth proportional to 99,178.08, 136,866.72 and 54,466.08 is: 75,163.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,178.08 : 136,866.72 = 54,466.08 : x
  2. Step 2: Convert to fraction form
    99,178.08/136,866.72 = 54,466.08/x
  3. Step 3: Cross multiply
    99,178.08x = 136,866.72 × 54,466.08
  4. Step 4: Simplify right side
    99,178.08x = 7,454,593,720.86
  5. Step 5: Solve for x
    x = 7,454,593,720.86/99,178.08
  6. Step 6: Final answer
    x = 75,163.72

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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.