Home / 142,720.40-214,080.60-95,718.80

Finding the Fourth Proportional to 142,720.40, 214,080.60 and 95,718.80

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Solution

The fourth proportional to 142,720.40, 214,080.60 and 95,718.80 is: 143,578.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,720.40 : 214,080.60 = 95,718.80 : x
  2. Step 2: Convert to fraction form
    142,720.40/214,080.60 = 95,718.80/x
  3. Step 3: Cross multiply
    142,720.40x = 214,080.60 × 95,718.80
  4. Step 4: Simplify right side
    142,720.40x = 20,491,538,135.28
  5. Step 5: Solve for x
    x = 20,491,538,135.28/142,720.40
  6. Step 6: Final answer
    x = 143,578.20

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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.