Home / 123,407.30-170,305.19-75,686.96

Finding the Fourth Proportional to 123,407.30, 170,305.19 and 75,686.96

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Solution

The fourth proportional to 123,407.30, 170,305.19 and 75,686.96 is: 104,449.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,407.30 : 170,305.19 = 75,686.96 : x
  2. Step 2: Convert to fraction form
    123,407.30/170,305.19 = 75,686.96/x
  3. Step 3: Cross multiply
    123,407.30x = 170,305.19 × 75,686.96
  4. Step 4: Simplify right side
    123,407.30x = 12,889,880,873.36
  5. Step 5: Solve for x
    x = 12,889,880,873.36/123,407.30
  6. Step 6: Final answer
    x = 104,449.91

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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.