Home / 129,829.79-179,260.01-83,916.61

Finding the Fourth Proportional to 129,829.79, 179,260.01 and 83,916.61

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Solution

The fourth proportional to 129,829.79, 179,260.01 and 83,916.61 is: 115,866.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,829.79 : 179,260.01 = 83,916.61 : x
  2. Step 2: Convert to fraction form
    129,829.79/179,260.01 = 83,916.61/x
  3. Step 3: Cross multiply
    129,829.79x = 179,260.01 × 83,916.61
  4. Step 4: Simplify right side
    129,829.79x = 15,042,892,347.77
  5. Step 5: Solve for x
    x = 15,042,892,347.77/129,829.79
  6. Step 6: Final answer
    x = 115,866.26

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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.