Home / 142,346.25-196,437.88-77,815.77

Finding the Fourth Proportional to 142,346.25, 196,437.88 and 77,815.77

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Solution

The fourth proportional to 142,346.25, 196,437.88 and 77,815.77 is: 107,385.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,346.25 : 196,437.88 = 77,815.77 : x
  2. Step 2: Convert to fraction form
    142,346.25/196,437.88 = 77,815.77/x
  3. Step 3: Cross multiply
    142,346.25x = 196,437.88 × 77,815.77
  4. Step 4: Simplify right side
    142,346.25x = 15,285,965,185.92
  5. Step 5: Solve for x
    x = 15,285,965,185.92/142,346.25
  6. Step 6: Final answer
    x = 107,385.79

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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.