Home / 156,023.22-215,310.51-84,401.70

Finding the Fourth Proportional to 156,023.22, 215,310.51 and 84,401.70

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Solution

The fourth proportional to 156,023.22, 215,310.51 and 84,401.70 is: 116,473.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,023.22 : 215,310.51 = 84,401.70 : x
  2. Step 2: Convert to fraction form
    156,023.22/215,310.51 = 84,401.70/x
  3. Step 3: Cross multiply
    156,023.22x = 215,310.51 × 84,401.70
  4. Step 4: Simplify right side
    156,023.22x = 18,172,573,071.87
  5. Step 5: Solve for x
    x = 18,172,573,071.87/156,023.22
  6. Step 6: Final answer
    x = 116,473.52

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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.