Home / 142,755.20-214,132.80-89,993.60

Finding the Fourth Proportional to 142,755.20, 214,132.80 and 89,993.60

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Solution

The fourth proportional to 142,755.20, 214,132.80 and 89,993.60 is: 134,990.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,755.20 : 214,132.80 = 89,993.60 : x
  2. Step 2: Convert to fraction form
    142,755.20/214,132.80 = 89,993.60/x
  3. Step 3: Cross multiply
    142,755.20x = 214,132.80 × 89,993.60
  4. Step 4: Simplify right side
    142,755.20x = 19,270,581,550.08
  5. Step 5: Solve for x
    x = 19,270,581,550.08/142,755.20
  6. Step 6: Final answer
    x = 134,990.40

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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.