Home / 84,138.27-126,170.55-31,510.83

Finding the Fourth Proportional to 84,138.27, 126,170.55 and 31,510.83

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Solution

The fourth proportional to 84,138.27, 126,170.55 and 31,510.83 is: 47,252.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,138.27 : 126,170.55 = 31,510.83 : x
  2. Step 2: Convert to fraction form
    84,138.27/126,170.55 = 31,510.83/x
  3. Step 3: Cross multiply
    84,138.27x = 126,170.55 × 31,510.83
  4. Step 4: Simplify right side
    84,138.27x = 3,975,738,752.06
  5. Step 5: Solve for x
    x = 3,975,738,752.06/84,138.27
  6. Step 6: Final answer
    x = 47,252.44

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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.