Home / 168,117.81-231,683.52-120,287.85

Finding the Fourth Proportional to 168,117.81, 231,683.52 and 120,287.85

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Solution

The fourth proportional to 168,117.81, 231,683.52 and 120,287.85 is: 165,768.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,117.81 : 231,683.52 = 120,287.85 : x
  2. Step 2: Convert to fraction form
    168,117.81/231,683.52 = 120,287.85/x
  3. Step 3: Cross multiply
    168,117.81x = 231,683.52 × 120,287.85
  4. Step 4: Simplify right side
    168,117.81x = 27,868,712,501.23
  5. Step 5: Solve for x
    x = 27,868,712,501.23/168,117.81
  6. Step 6: Final answer
    x = 165,768.95

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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.