Home / 142,003.92-195,966.06-78,341.70

Finding the Fourth Proportional to 142,003.92, 195,966.06 and 78,341.70

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Solution

The fourth proportional to 142,003.92, 195,966.06 and 78,341.70 is: 108,111.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,003.92 : 195,966.06 = 78,341.70 : x
  2. Step 2: Convert to fraction form
    142,003.92/195,966.06 = 78,341.70/x
  3. Step 3: Cross multiply
    142,003.92x = 195,966.06 × 78,341.70
  4. Step 4: Simplify right side
    142,003.92x = 15,352,314,282.70
  5. Step 5: Solve for x
    x = 15,352,314,282.70/142,003.92
  6. Step 6: Final answer
    x = 108,111.90

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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.