Home / 156,443.40-215,891.46-84,823.20

Finding the Fourth Proportional to 156,443.40, 215,891.46 and 84,823.20

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Solution

The fourth proportional to 156,443.40, 215,891.46 and 84,823.20 is: 117,055.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,443.40 : 215,891.46 = 84,823.20 : x
  2. Step 2: Convert to fraction form
    156,443.40/215,891.46 = 84,823.20/x
  3. Step 3: Cross multiply
    156,443.40x = 215,891.46 × 84,823.20
  4. Step 4: Simplify right side
    156,443.40x = 18,312,604,489.87
  5. Step 5: Solve for x
    x = 18,312,604,489.87/156,443.40
  6. Step 6: Final answer
    x = 117,055.78

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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.