Home / 87,143.23-120,257.65-49,417.48

Finding the Fourth Proportional to 87,143.23, 120,257.65 and 49,417.48

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Solution

The fourth proportional to 87,143.23, 120,257.65 and 49,417.48 is: 68,196.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,143.23 : 120,257.65 = 49,417.48 : x
  2. Step 2: Convert to fraction form
    87,143.23/120,257.65 = 49,417.48/x
  3. Step 3: Cross multiply
    87,143.23x = 120,257.65 × 49,417.48
  4. Step 4: Simplify right side
    87,143.23x = 5,942,830,013.72
  5. Step 5: Solve for x
    x = 5,942,830,013.72/87,143.23
  6. Step 6: Final answer
    x = 68,196.12

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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.