Home / 126,424.62-174,500.73-78,649.47

Finding the Fourth Proportional to 126,424.62, 174,500.73 and 78,649.47

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Solution

The fourth proportional to 126,424.62, 174,500.73 and 78,649.47 is: 108,557.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,424.62 : 174,500.73 = 78,649.47 : x
  2. Step 2: Convert to fraction form
    126,424.62/174,500.73 = 78,649.47/x
  3. Step 3: Cross multiply
    126,424.62x = 174,500.73 × 78,649.47
  4. Step 4: Simplify right side
    126,424.62x = 13,724,389,929.11
  5. Step 5: Solve for x
    x = 13,724,389,929.11/126,424.62
  6. Step 6: Final answer
    x = 108,557.89

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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.