Home / 142,053.80-196,029.54-78,391.64

Finding the Fourth Proportional to 142,053.80, 196,029.54 and 78,391.64

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Solution

The fourth proportional to 142,053.80, 196,029.54 and 78,391.64 is: 108,177.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,053.80 : 196,029.54 = 78,391.64 : x
  2. Step 2: Convert to fraction form
    142,053.80/196,029.54 = 78,391.64/x
  3. Step 3: Cross multiply
    142,053.80x = 196,029.54 × 78,391.64
  4. Step 4: Simplify right side
    142,053.80x = 15,367,077,129.05
  5. Step 5: Solve for x
    x = 15,367,077,129.05/142,053.80
  6. Step 6: Final answer
    x = 108,177.87

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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.