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Finding the Fourth Proportional to 132,964.15, 199,280.15 and 85,452.79

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Solution

The fourth proportional to 132,964.15, 199,280.15 and 85,452.79 is: 128,072.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,964.15 : 199,280.15 = 85,452.79 : x
  2. Step 2: Convert to fraction form
    132,964.15/199,280.15 = 85,452.79/x
  3. Step 3: Cross multiply
    132,964.15x = 199,280.15 × 85,452.79
  4. Step 4: Simplify right side
    132,964.15x = 17,029,044,809.12
  5. Step 5: Solve for x
    x = 17,029,044,809.12/132,964.15
  6. Step 6: Final answer
    x = 128,072.45

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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.