Home / 142,305.80-196,382.61-77,776.34

Finding the Fourth Proportional to 142,305.80, 196,382.61 and 77,776.34

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Solution

The fourth proportional to 142,305.80, 196,382.61 and 77,776.34 is: 107,331.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,305.80 : 196,382.61 = 77,776.34 : x
  2. Step 2: Convert to fraction form
    142,305.80/196,382.61 = 77,776.34/x
  3. Step 3: Cross multiply
    142,305.80x = 196,382.61 × 77,776.34
  4. Step 4: Simplify right side
    142,305.80x = 15,273,919,663.53
  5. Step 5: Solve for x
    x = 15,273,919,663.53/142,305.80
  6. Step 6: Final answer
    x = 107,331.68

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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.