Home / 121,862.15-168,174.35-68,147.04

Finding the Fourth Proportional to 121,862.15, 168,174.35 and 68,147.04

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Solution

The fourth proportional to 121,862.15, 168,174.35 and 68,147.04 is: 94,045.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,862.15 : 168,174.35 = 68,147.04 : x
  2. Step 2: Convert to fraction form
    121,862.15/168,174.35 = 68,147.04/x
  3. Step 3: Cross multiply
    121,862.15x = 168,174.35 × 68,147.04
  4. Step 4: Simplify right side
    121,862.15x = 11,460,584,156.42
  5. Step 5: Solve for x
    x = 11,460,584,156.42/121,862.15
  6. Step 6: Final answer
    x = 94,045.48

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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.