Home / 121,010.92-166,999.14-66,565.40

Finding the Fourth Proportional to 121,010.92, 166,999.14 and 66,565.40

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Solution

The fourth proportional to 121,010.92, 166,999.14 and 66,565.40 is: 91,862.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.92 : 166,999.14 = 66,565.40 : x
  2. Step 2: Convert to fraction form
    121,010.92/166,999.14 = 66,565.40/x
  3. Step 3: Cross multiply
    121,010.92x = 166,999.14 × 66,565.40
  4. Step 4: Simplify right side
    121,010.92x = 11,116,363,718.76
  5. Step 5: Solve for x
    x = 11,116,363,718.76/121,010.92
  6. Step 6: Final answer
    x = 91,862.49

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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.