Home / 121,580.18-167,780.19-67,864.72

Finding the Fourth Proportional to 121,580.18, 167,780.19 and 67,864.72

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Solution

The fourth proportional to 121,580.18, 167,780.19 and 67,864.72 is: 93,653.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,580.18 : 167,780.19 = 67,864.72 : x
  2. Step 2: Convert to fraction form
    121,580.18/167,780.19 = 67,864.72/x
  3. Step 3: Cross multiply
    121,580.18x = 167,780.19 × 67,864.72
  4. Step 4: Simplify right side
    121,580.18x = 11,386,355,615.90
  5. Step 5: Solve for x
    x = 11,386,355,615.90/121,580.18
  6. Step 6: Final answer
    x = 93,653.06

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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.