Home / 136,143.09-187,849.89-79,543.53

Finding the Fourth Proportional to 136,143.09, 187,849.89 and 79,543.53

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Solution

The fourth proportional to 136,143.09, 187,849.89 and 79,543.53 is: 109,753.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,143.09 : 187,849.89 = 79,543.53 : x
  2. Step 2: Convert to fraction form
    136,143.09/187,849.89 = 79,543.53/x
  3. Step 3: Cross multiply
    136,143.09x = 187,849.89 × 79,543.53
  4. Step 4: Simplify right side
    136,143.09x = 14,942,243,360.71
  5. Step 5: Solve for x
    x = 14,942,243,360.71/136,143.09
  6. Step 6: Final answer
    x = 109,753.96

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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.