Home / 121,617.28-167,848.64-67,905.78

Finding the Fourth Proportional to 121,617.28, 167,848.64 and 67,905.78

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Solution

The fourth proportional to 121,617.28, 167,848.64 and 67,905.78 is: 93,719.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,617.28 : 167,848.64 = 67,905.78 : x
  2. Step 2: Convert to fraction form
    121,617.28/167,848.64 = 67,905.78/x
  3. Step 3: Cross multiply
    121,617.28x = 167,848.64 × 67,905.78
  4. Step 4: Simplify right side
    121,617.28x = 11,397,891,642.37
  5. Step 5: Solve for x
    x = 11,397,891,642.37/121,617.28
  6. Step 6: Final answer
    x = 93,719.34

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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.