Home / 121,642.12-167,864.54-67,928.08

Finding the Fourth Proportional to 121,642.12, 167,864.54 and 67,928.08

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Solution

The fourth proportional to 121,642.12, 167,864.54 and 67,928.08 is: 93,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,642.12 : 167,864.54 = 67,928.08 : x
  2. Step 2: Convert to fraction form
    121,642.12/167,864.54 = 67,928.08/x
  3. Step 3: Cross multiply
    121,642.12x = 167,864.54 × 67,928.08
  4. Step 4: Simplify right side
    121,642.12x = 11,402,715,902.28
  5. Step 5: Solve for x
    x = 11,402,715,902.28/121,642.12
  6. Step 6: Final answer
    x = 93,739.86

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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.