Home / 142,223.16-196,255.26-81,777.72

Finding the Fourth Proportional to 142,223.16, 196,255.26 and 81,777.72

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Solution

The fourth proportional to 142,223.16, 196,255.26 and 81,777.72 is: 112,845.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,223.16 : 196,255.26 = 81,777.72 : x
  2. Step 2: Convert to fraction form
    142,223.16/196,255.26 = 81,777.72/x
  3. Step 3: Cross multiply
    142,223.16x = 196,255.26 × 81,777.72
  4. Step 4: Simplify right side
    142,223.16x = 16,049,307,700.81
  5. Step 5: Solve for x
    x = 16,049,307,700.81/142,223.16
  6. Step 6: Final answer
    x = 112,845.95

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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.