Home / 103,079.31-154,356.45-67,912.35

Finding the Fourth Proportional to 103,079.31, 154,356.45 and 67,912.35

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Solution

The fourth proportional to 103,079.31, 154,356.45 and 67,912.35 is: 101,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,079.31 : 154,356.45 = 67,912.35 : x
  2. Step 2: Convert to fraction form
    103,079.31/154,356.45 = 67,912.35/x
  3. Step 3: Cross multiply
    103,079.31x = 154,356.45 × 67,912.35
  4. Step 4: Simplify right side
    103,079.31x = 10,482,709,257.16
  5. Step 5: Solve for x
    x = 10,482,709,257.16/103,079.31
  6. Step 6: Final answer
    x = 101,695.57

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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.