Home / 142,247.53-196,305.55-78,589.43

Finding the Fourth Proportional to 142,247.53, 196,305.55 and 78,589.43

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Solution

The fourth proportional to 142,247.53, 196,305.55 and 78,589.43 is: 108,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,247.53 : 196,305.55 = 78,589.43 : x
  2. Step 2: Convert to fraction form
    142,247.53/196,305.55 = 78,589.43/x
  3. Step 3: Cross multiply
    142,247.53x = 196,305.55 × 78,589.43
  4. Step 4: Simplify right side
    142,247.53x = 15,427,540,298.81
  5. Step 5: Solve for x
    x = 15,427,540,298.81/142,247.53
  6. Step 6: Final answer
    x = 108,455.60

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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.