Home / 122,857.29-169,542.90-69,142.69

Finding the Fourth Proportional to 122,857.29, 169,542.90 and 69,142.69

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Solution

The fourth proportional to 122,857.29, 169,542.90 and 69,142.69 is: 95,416.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,857.29 : 169,542.90 = 69,142.69 : x
  2. Step 2: Convert to fraction form
    122,857.29/169,542.90 = 69,142.69/x
  3. Step 3: Cross multiply
    122,857.29x = 169,542.90 × 69,142.69
  4. Step 4: Simplify right side
    122,857.29x = 11,722,652,154.57
  5. Step 5: Solve for x
    x = 11,722,652,154.57/122,857.29
  6. Step 6: Final answer
    x = 95,416.82

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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.