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Finding the Fourth Proportional to 121,689.52, 167,920.59 and 67,967.08

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Solution

The fourth proportional to 121,689.52, 167,920.59 and 67,967.08 is: 93,788.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,689.52 : 167,920.59 = 67,967.08 : x
  2. Step 2: Convert to fraction form
    121,689.52/167,920.59 = 67,967.08/x
  3. Step 3: Cross multiply
    121,689.52x = 167,920.59 × 67,967.08
  4. Step 4: Simplify right side
    121,689.52x = 11,413,072,174.18
  5. Step 5: Solve for x
    x = 11,413,072,174.18/121,689.52
  6. Step 6: Final answer
    x = 93,788.46

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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.