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Finding the Fourth Proportional to 121,585.89, 167,788.08 and 67,870.47

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Solution

The fourth proportional to 121,585.89, 167,788.08 and 67,870.47 is: 93,661.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,585.89 : 167,788.08 = 67,870.47 : x
  2. Step 2: Convert to fraction form
    121,585.89/167,788.08 = 67,870.47/x
  3. Step 3: Cross multiply
    121,585.89x = 167,788.08 × 67,870.47
  4. Step 4: Simplify right side
    121,585.89x = 11,387,855,850.00
  5. Step 5: Solve for x
    x = 11,387,855,850.00/121,585.89
  6. Step 6: Final answer
    x = 93,661.00

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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.