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Finding the Fourth Proportional to 143,771.94, 215,494.45 and 87,488.13

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Solution

The fourth proportional to 143,771.94, 215,494.45 and 87,488.13 is: 131,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,771.94 : 215,494.45 = 87,488.13 : x
  2. Step 2: Convert to fraction form
    143,771.94/215,494.45 = 87,488.13/x
  3. Step 3: Cross multiply
    143,771.94x = 215,494.45 × 87,488.13
  4. Step 4: Simplify right side
    143,771.94x = 18,853,205,473.09
  5. Step 5: Solve for x
    x = 18,853,205,473.09/143,771.94
  6. Step 6: Final answer
    x = 131,132.72

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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.