Home / 142,005.70-195,977.37-81,595.90

Finding the Fourth Proportional to 142,005.70, 195,977.37 and 81,595.90

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Solution

The fourth proportional to 142,005.70, 195,977.37 and 81,595.90 is: 112,607.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,005.70 : 195,977.37 = 81,595.90 : x
  2. Step 2: Convert to fraction form
    142,005.70/195,977.37 = 81,595.90/x
  3. Step 3: Cross multiply
    142,005.70x = 195,977.37 × 81,595.90
  4. Step 4: Simplify right side
    142,005.70x = 15,990,949,884.78
  5. Step 5: Solve for x
    x = 15,990,949,884.78/142,005.70
  6. Step 6: Final answer
    x = 112,607.80

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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.