Home / 123,391.40-170,279.92-66,802.76

Finding the Fourth Proportional to 123,391.40, 170,279.92 and 66,802.76

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Solution

The fourth proportional to 123,391.40, 170,279.92 and 66,802.76 is: 92,187.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,391.40 : 170,279.92 = 66,802.76 : x
  2. Step 2: Convert to fraction form
    123,391.40/170,279.92 = 66,802.76/x
  3. Step 3: Cross multiply
    123,391.40x = 170,279.92 × 66,802.76
  4. Step 4: Simplify right side
    123,391.40x = 11,375,168,628.58
  5. Step 5: Solve for x
    x = 11,375,168,628.58/123,391.40
  6. Step 6: Final answer
    x = 92,187.69

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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.