Home / 143,000.00-197,339.45-78,470.31

Finding the Fourth Proportional to 143,000.00, 197,339.45 and 78,470.31

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Solution

The fourth proportional to 143,000.00, 197,339.45 and 78,470.31 is: 108,288.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,000.00 : 197,339.45 = 78,470.31 : x
  2. Step 2: Convert to fraction form
    143,000.00/197,339.45 = 78,470.31/x
  3. Step 3: Cross multiply
    143,000.00x = 197,339.45 × 78,470.31
  4. Step 4: Simplify right side
    143,000.00x = 15,485,288,577.39
  5. Step 5: Solve for x
    x = 15,485,288,577.39/143,000.00
  6. Step 6: Final answer
    x = 108,288.73

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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.