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Finding the Fourth Proportional to 105,601.20, 158,401.80 and 98,689.20

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Solution

The fourth proportional to 105,601.20, 158,401.80 and 98,689.20 is: 148,033.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,601.20 : 158,401.80 = 98,689.20 : x
  2. Step 2: Convert to fraction form
    105,601.20/158,401.80 = 98,689.20/x
  3. Step 3: Cross multiply
    105,601.20x = 158,401.80 × 98,689.20
  4. Step 4: Simplify right side
    105,601.20x = 15,632,546,920.56
  5. Step 5: Solve for x
    x = 15,632,546,920.56/105,601.20
  6. Step 6: Final answer
    x = 148,033.80

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1.5x scale

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.