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Finding the Fourth Proportional to 99,230.28, 136,938.72 and 53,908.59

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Solution

The fourth proportional to 99,230.28, 136,938.72 and 53,908.59 is: 74,394.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,230.28 : 136,938.72 = 53,908.59 : x
  2. Step 2: Convert to fraction form
    99,230.28/136,938.72 = 53,908.59/x
  3. Step 3: Cross multiply
    99,230.28x = 136,938.72 × 53,908.59
  4. Step 4: Simplify right side
    99,230.28x = 7,382,173,311.60
  5. Step 5: Solve for x
    x = 7,382,173,311.60/99,230.28
  6. Step 6: Final answer
    x = 74,394.36

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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.