Home / 102,875.12-154,311.58-78,067.52

Finding the Fourth Proportional to 102,875.12, 154,311.58 and 78,067.52

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Solution

The fourth proportional to 102,875.12, 154,311.58 and 78,067.52 is: 117,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,875.12 : 154,311.58 = 78,067.52 : x
  2. Step 2: Convert to fraction form
    102,875.12/154,311.58 = 78,067.52/x
  3. Step 3: Cross multiply
    102,875.12x = 154,311.58 × 78,067.52
  4. Step 4: Simplify right side
    102,875.12x = 12,046,722,357.88
  5. Step 5: Solve for x
    x = 12,046,722,357.88/102,875.12
  6. Step 6: Final answer
    x = 117,100.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.