Home / 84,121.69-126,182.13-79,916.98

Finding the Fourth Proportional to 84,121.69, 126,182.13 and 79,916.98

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Solution

The fourth proportional to 84,121.69, 126,182.13 and 79,916.98 is: 119,875.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,121.69 : 126,182.13 = 79,916.98 : x
  2. Step 2: Convert to fraction form
    84,121.69/126,182.13 = 79,916.98/x
  3. Step 3: Cross multiply
    84,121.69x = 126,182.13 × 79,916.98
  4. Step 4: Simplify right side
    84,121.69x = 10,084,094,044.53
  5. Step 5: Solve for x
    x = 10,084,094,044.53/84,121.69
  6. Step 6: Final answer
    x = 119,875.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.