Home / 121,862.90-168,169.65-68,147.30

Finding the Fourth Proportional to 121,862.90, 168,169.65 and 68,147.30

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Solution

The fourth proportional to 121,862.90, 168,169.65 and 68,147.30 is: 94,042.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,862.90 : 168,169.65 = 68,147.30 : x
  2. Step 2: Convert to fraction form
    121,862.90/168,169.65 = 68,147.30/x
  3. Step 3: Cross multiply
    121,862.90x = 168,169.65 × 68,147.30
  4. Step 4: Simplify right side
    121,862.90x = 11,460,307,589.45
  5. Step 5: Solve for x
    x = 11,460,307,589.45/121,862.90
  6. Step 6: Final answer
    x = 94,042.63

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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.