Home / 110,705.20-152,792.70-65,380.12

Finding the Fourth Proportional to 110,705.20, 152,792.70 and 65,380.12

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Solution

The fourth proportional to 110,705.20, 152,792.70 and 65,380.12 is: 90,236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,705.20 : 152,792.70 = 65,380.12 : x
  2. Step 2: Convert to fraction form
    110,705.20/152,792.70 = 65,380.12/x
  3. Step 3: Cross multiply
    110,705.20x = 152,792.70 × 65,380.12
  4. Step 4: Simplify right side
    110,705.20x = 9,989,605,061.12
  5. Step 5: Solve for x
    x = 9,989,605,061.12/110,705.20
  6. Step 6: Final answer
    x = 90,236.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.