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Finding the Fourth Proportional to 121,535.57, 167,702.30 and 67,810.15

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Solution

The fourth proportional to 121,535.57, 167,702.30 and 67,810.15 is: 93,568.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,535.57 : 167,702.30 = 67,810.15 : x
  2. Step 2: Convert to fraction form
    121,535.57/167,702.30 = 67,810.15/x
  3. Step 3: Cross multiply
    121,535.57x = 167,702.30 × 67,810.15
  4. Step 4: Simplify right side
    121,535.57x = 11,371,917,360.04
  5. Step 5: Solve for x
    x = 11,371,917,360.04/121,535.57
  6. Step 6: Final answer
    x = 93,568.63

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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.