Home / 102,806.32-154,008.96-67,639.36

Finding the Fourth Proportional to 102,806.32, 154,008.96 and 67,639.36

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Solution

The fourth proportional to 102,806.32, 154,008.96 and 67,639.36 is: 101,327.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,806.32 : 154,008.96 = 67,639.36 : x
  2. Step 2: Convert to fraction form
    102,806.32/154,008.96 = 67,639.36/x
  3. Step 3: Cross multiply
    102,806.32x = 154,008.96 × 67,639.36
  4. Step 4: Simplify right side
    102,806.32x = 10,417,067,488.67
  5. Step 5: Solve for x
    x = 10,417,067,488.67/102,806.32
  6. Step 6: Final answer
    x = 101,327.11

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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.