Home / 83,718.36-126,153.05-69,251.36

Finding the Fourth Proportional to 83,718.36, 126,153.05 and 69,251.36

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Solution

The fourth proportional to 83,718.36, 126,153.05 and 69,251.36 is: 104,353.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,718.36 : 126,153.05 = 69,251.36 : x
  2. Step 2: Convert to fraction form
    83,718.36/126,153.05 = 69,251.36/x
  3. Step 3: Cross multiply
    83,718.36x = 126,153.05 × 69,251.36
  4. Step 4: Simplify right side
    83,718.36x = 8,736,269,303.63
  5. Step 5: Solve for x
    x = 8,736,269,303.63/83,718.36
  6. Step 6: Final answer
    x = 104,353.09

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.