Home / 156,947.30-216,661.67-100,391.48

Finding the Fourth Proportional to 156,947.30, 216,661.67 and 100,391.48

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Solution

The fourth proportional to 156,947.30, 216,661.67 and 100,391.48 is: 138,587.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,947.30 : 216,661.67 = 100,391.48 : x
  2. Step 2: Convert to fraction form
    156,947.30/216,661.67 = 100,391.48/x
  3. Step 3: Cross multiply
    156,947.30x = 216,661.67 × 100,391.48
  4. Step 4: Simplify right side
    156,947.30x = 21,750,985,710.57
  5. Step 5: Solve for x
    x = 21,750,985,710.57/156,947.30
  6. Step 6: Final answer
    x = 138,587.83

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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.