Home / 123,391.16-170,279.86-66,802.54

Finding the Fourth Proportional to 123,391.16, 170,279.86 and 66,802.54

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Solution

The fourth proportional to 123,391.16, 170,279.86 and 66,802.54 is: 92,187.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,391.16 : 170,279.86 = 66,802.54 : x
  2. Step 2: Convert to fraction form
    123,391.16/170,279.86 = 66,802.54/x
  3. Step 3: Cross multiply
    123,391.16x = 170,279.86 × 66,802.54
  4. Step 4: Simplify right side
    123,391.16x = 11,375,127,158.84
  5. Step 5: Solve for x
    x = 11,375,127,158.84/123,391.16
  6. Step 6: Final answer
    x = 92,187.54

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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.