Home / 105,680.40-158,541.30-39,121.08

Finding the Fourth Proportional to 105,680.40, 158,541.30 and 39,121.08

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Solution

The fourth proportional to 105,680.40, 158,541.30 and 39,121.08 is: 58,689.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,680.40 : 158,541.30 = 39,121.08 : x
  2. Step 2: Convert to fraction form
    105,680.40/158,541.30 = 39,121.08/x
  3. Step 3: Cross multiply
    105,680.40x = 158,541.30 × 39,121.08
  4. Step 4: Simplify right side
    105,680.40x = 6,202,306,880.60
  5. Step 5: Solve for x
    x = 6,202,306,880.60/105,680.40
  6. Step 6: Final answer
    x = 58,689.28

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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.