Home / 137,869.76-190,211.82-90,151.04

Finding the Fourth Proportional to 137,869.76, 190,211.82 and 90,151.04

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Solution

The fourth proportional to 137,869.76, 190,211.82 and 90,151.04 is: 124,376.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,869.76 : 190,211.82 = 90,151.04 : x
  2. Step 2: Convert to fraction form
    137,869.76/190,211.82 = 90,151.04/x
  3. Step 3: Cross multiply
    137,869.76x = 190,211.82 × 90,151.04
  4. Step 4: Simplify right side
    137,869.76x = 17,147,793,393.29
  5. Step 5: Solve for x
    x = 17,147,793,393.29/137,869.76
  6. Step 6: Final answer
    x = 124,376.76

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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.