Home / 142,023.75-195,999.03-81,613.32

Finding the Fourth Proportional to 142,023.75, 195,999.03 and 81,613.32

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Solution

The fourth proportional to 142,023.75, 195,999.03 and 81,613.32 is: 112,629.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,023.75 : 195,999.03 = 81,613.32 : x
  2. Step 2: Convert to fraction form
    142,023.75/195,999.03 = 81,613.32/x
  3. Step 3: Cross multiply
    142,023.75x = 195,999.03 × 81,613.32
  4. Step 4: Simplify right side
    142,023.75x = 15,996,131,555.08
  5. Step 5: Solve for x
    x = 15,996,131,555.08/142,023.75
  6. Step 6: Final answer
    x = 112,629.98

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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.