Home / 126,371.92-174,431.86-77,988.64

Finding the Fourth Proportional to 126,371.92, 174,431.86 and 77,988.64

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Solution

The fourth proportional to 126,371.92, 174,431.86 and 77,988.64 is: 107,648.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,371.92 : 174,431.86 = 77,988.64 : x
  2. Step 2: Convert to fraction form
    126,371.92/174,431.86 = 77,988.64/x
  3. Step 3: Cross multiply
    126,371.92x = 174,431.86 × 77,988.64
  4. Step 4: Simplify right side
    126,371.92x = 13,603,703,534.07
  5. Step 5: Solve for x
    x = 13,603,703,534.07/126,371.92
  6. Step 6: Final answer
    x = 107,648.15

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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.