Home / 142,343.14-196,437.66-77,815.92

Finding the Fourth Proportional to 142,343.14, 196,437.66 and 77,815.92

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Solution

The fourth proportional to 142,343.14, 196,437.66 and 77,815.92 is: 107,388.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,343.14 : 196,437.66 = 77,815.92 : x
  2. Step 2: Convert to fraction form
    142,343.14/196,437.66 = 77,815.92/x
  3. Step 3: Cross multiply
    142,343.14x = 196,437.66 × 77,815.92
  4. Step 4: Simplify right side
    142,343.14x = 15,285,977,235.55
  5. Step 5: Solve for x
    x = 15,285,977,235.55/142,343.14
  6. Step 6: Final answer
    x = 107,388.23

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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.