Home / 142,947.86-197,268.18-79,285.66

Finding the Fourth Proportional to 142,947.86, 197,268.18 and 79,285.66

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Solution

The fourth proportional to 142,947.86, 197,268.18 and 79,285.66 is: 109,414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,947.86 : 197,268.18 = 79,285.66 : x
  2. Step 2: Convert to fraction form
    142,947.86/197,268.18 = 79,285.66/x
  3. Step 3: Cross multiply
    142,947.86x = 197,268.18 × 79,285.66
  4. Step 4: Simplify right side
    142,947.86x = 15,640,536,465.53
  5. Step 5: Solve for x
    x = 15,640,536,465.53/142,947.86
  6. Step 6: Final answer
    x = 109,414.28

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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.