Home / 103,621.35-155,508.83-68,549.35

Finding the Fourth Proportional to 103,621.35, 155,508.83 and 68,549.35

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Solution

The fourth proportional to 103,621.35, 155,508.83 and 68,549.35 is: 102,874.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621.35 : 155,508.83 = 68,549.35 : x
  2. Step 2: Convert to fraction form
    103,621.35/155,508.83 = 68,549.35/x
  3. Step 3: Cross multiply
    103,621.35x = 155,508.83 × 68,549.35
  4. Step 4: Simplify right side
    103,621.35x = 10,660,029,215.76
  5. Step 5: Solve for x
    x = 10,660,029,215.76/103,621.35
  6. Step 6: Final answer
    x = 102,874.83

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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.