Home / 123,389.28-170,278.40-66,801.84

Finding the Fourth Proportional to 123,389.28, 170,278.40 and 66,801.84

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Solution

The fourth proportional to 123,389.28, 170,278.40 and 66,801.84 is: 92,187.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,389.28 : 170,278.40 = 66,801.84 : x
  2. Step 2: Convert to fraction form
    123,389.28/170,278.40 = 66,801.84/x
  3. Step 3: Cross multiply
    123,389.28x = 170,278.40 × 66,801.84
  4. Step 4: Simplify right side
    123,389.28x = 11,374,910,432.26
  5. Step 5: Solve for x
    x = 11,374,910,432.26/123,389.28
  6. Step 6: Final answer
    x = 92,187.19

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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.