Home / 142,305.55-196,382.27-77,776.09

Finding the Fourth Proportional to 142,305.55, 196,382.27 and 77,776.09

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Solution

The fourth proportional to 142,305.55, 196,382.27 and 77,776.09 is: 107,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,305.55 : 196,382.27 = 77,776.09 : x
  2. Step 2: Convert to fraction form
    142,305.55/196,382.27 = 77,776.09/x
  3. Step 3: Cross multiply
    142,305.55x = 196,382.27 × 77,776.09
  4. Step 4: Simplify right side
    142,305.55x = 15,273,845,105.92
  5. Step 5: Solve for x
    x = 15,273,845,105.92/142,305.55
  6. Step 6: Final answer
    x = 107,331.34

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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.