Home / 119,005.80-178,509.34-40,120.76

Finding the Fourth Proportional to 119,005.80, 178,509.34 and 40,120.76

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Solution

The fourth proportional to 119,005.80, 178,509.34 and 40,120.76 is: 60,181.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,005.80 : 178,509.34 = 40,120.76 : x
  2. Step 2: Convert to fraction form
    119,005.80/178,509.34 = 40,120.76/x
  3. Step 3: Cross multiply
    119,005.80x = 178,509.34 × 40,120.76
  4. Step 4: Simplify right side
    119,005.80x = 7,161,930,387.90
  5. Step 5: Solve for x
    x = 7,161,930,387.90/119,005.80
  6. Step 6: Final answer
    x = 60,181.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.