Home / 209,778.76-289,502.13-119,132.20

Finding the Fourth Proportional to 209,778.76, 289,502.13 and 119,132.20

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Solution

The fourth proportional to 209,778.76, 289,502.13 and 119,132.20 is: 164,406.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,778.76 : 289,502.13 = 119,132.20 : x
  2. Step 2: Convert to fraction form
    209,778.76/289,502.13 = 119,132.20/x
  3. Step 3: Cross multiply
    209,778.76x = 289,502.13 × 119,132.20
  4. Step 4: Simplify right side
    209,778.76x = 34,489,025,651.59
  5. Step 5: Solve for x
    x = 34,489,025,651.59/209,778.76
  6. Step 6: Final answer
    x = 164,406.66

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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.