Home / 136,117.09-187,813.92-79,517.53

Finding the Fourth Proportional to 136,117.09, 187,813.92 and 79,517.53

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Solution

The fourth proportional to 136,117.09, 187,813.92 and 79,517.53 is: 109,718.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,117.09 : 187,813.92 = 79,517.53 : x
  2. Step 2: Convert to fraction form
    136,117.09/187,813.92 = 79,517.53/x
  3. Step 3: Cross multiply
    136,117.09x = 187,813.92 × 79,517.53
  4. Step 4: Simplify right side
    136,117.09x = 14,934,499,018.02
  5. Step 5: Solve for x
    x = 14,934,499,018.02/136,117.09
  6. Step 6: Final answer
    x = 109,718.03

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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.