Home / 156,443.76-215,890.38-84,823.56

Finding the Fourth Proportional to 156,443.76, 215,890.38 and 84,823.56

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Solution

The fourth proportional to 156,443.76, 215,890.38 and 84,823.56 is: 117,055.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,443.76 : 215,890.38 = 84,823.56 : x
  2. Step 2: Convert to fraction form
    156,443.76/215,890.38 = 84,823.56/x
  3. Step 3: Cross multiply
    156,443.76x = 215,890.38 × 84,823.56
  4. Step 4: Simplify right side
    156,443.76x = 18,312,590,601.35
  5. Step 5: Solve for x
    x = 18,312,590,601.35/156,443.76
  6. Step 6: Final answer
    x = 117,055.42

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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.