Home / 84,143.60-126,178.47-31,516.18

Finding the Fourth Proportional to 84,143.60, 126,178.47 and 31,516.18

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Solution

The fourth proportional to 84,143.60, 126,178.47 and 31,516.18 is: 47,260.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,143.60 : 126,178.47 = 31,516.18 : x
  2. Step 2: Convert to fraction form
    84,143.60/126,178.47 = 31,516.18/x
  3. Step 3: Cross multiply
    84,143.60x = 126,178.47 × 31,516.18
  4. Step 4: Simplify right side
    84,143.60x = 3,976,663,372.64
  5. Step 5: Solve for x
    x = 3,976,663,372.64/84,143.60
  6. Step 6: Final answer
    x = 47,260.44

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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.