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Finding the Fourth Proportional to 121,387.74, 167,506.56 and 67,675.74

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Solution

The fourth proportional to 121,387.74, 167,506.56 and 67,675.74 is: 93,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,387.74 : 167,506.56 = 67,675.74 : x
  2. Step 2: Convert to fraction form
    121,387.74/167,506.56 = 67,675.74/x
  3. Step 3: Cross multiply
    121,387.74x = 167,506.56 × 67,675.74
  4. Step 4: Simplify right side
    121,387.74x = 11,336,130,402.85
  5. Step 5: Solve for x
    x = 11,336,130,402.85/121,387.74
  6. Step 6: Final answer
    x = 93,387.77

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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.