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Finding the Fourth Proportional to 131,443.92, 181,392.48 and 71,827.92

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Solution

The fourth proportional to 131,443.92, 181,392.48 and 71,827.92 is: 99,122.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,443.92 : 181,392.48 = 71,827.92 : x
  2. Step 2: Convert to fraction form
    131,443.92/181,392.48 = 71,827.92/x
  3. Step 3: Cross multiply
    131,443.92x = 181,392.48 × 71,827.92
  4. Step 4: Simplify right side
    131,443.92x = 13,029,044,542.04
  5. Step 5: Solve for x
    x = 13,029,044,542.04/131,443.92
  6. Step 6: Final answer
    x = 99,122.46

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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.