Home / 142,278.70-196,345.12-77,747.94

Finding the Fourth Proportional to 142,278.70, 196,345.12 and 77,747.94

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Solution

The fourth proportional to 142,278.70, 196,345.12 and 77,747.94 is: 107,292.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,278.70 : 196,345.12 = 77,747.94 : x
  2. Step 2: Convert to fraction form
    142,278.70/196,345.12 = 77,747.94/x
  3. Step 3: Cross multiply
    142,278.70x = 196,345.12 × 77,747.94
  4. Step 4: Simplify right side
    142,278.70x = 15,265,428,753.18
  5. Step 5: Solve for x
    x = 15,265,428,753.18/142,278.70
  6. Step 6: Final answer
    x = 107,292.44

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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.