Home / 142,230.78-196,284.42-81,801.45

Finding the Fourth Proportional to 142,230.78, 196,284.42 and 81,801.45

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Solution

The fourth proportional to 142,230.78, 196,284.42 and 81,801.45 is: 112,889.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,230.78 : 196,284.42 = 81,801.45 : x
  2. Step 2: Convert to fraction form
    142,230.78/196,284.42 = 81,801.45/x
  3. Step 3: Cross multiply
    142,230.78x = 196,284.42 × 81,801.45
  4. Step 4: Simplify right side
    142,230.78x = 16,056,350,168.41
  5. Step 5: Solve for x
    x = 16,056,350,168.41/142,230.78
  6. Step 6: Final answer
    x = 112,889.42

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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.