Home / 121,261.28-167,329.12-89,447.68

Finding the Fourth Proportional to 121,261.28, 167,329.12 and 89,447.68

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Solution

The fourth proportional to 121,261.28, 167,329.12 and 89,447.68 is: 123,429.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,261.28 : 167,329.12 = 89,447.68 : x
  2. Step 2: Convert to fraction form
    121,261.28/167,329.12 = 89,447.68/x
  3. Step 3: Cross multiply
    121,261.28x = 167,329.12 × 89,447.68
  4. Step 4: Simplify right side
    121,261.28x = 14,967,201,580.44
  5. Step 5: Solve for x
    x = 14,967,201,580.44/121,261.28
  6. Step 6: Final answer
    x = 123,429.36

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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.