Home / 157,440.38-217,267.11-85,820.18

Finding the Fourth Proportional to 157,440.38, 217,267.11 and 85,820.18

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Solution

The fourth proportional to 157,440.38, 217,267.11 and 85,820.18 is: 118,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,440.38 : 217,267.11 = 85,820.18 : x
  2. Step 2: Convert to fraction form
    157,440.38/217,267.11 = 85,820.18/x
  3. Step 3: Cross multiply
    157,440.38x = 217,267.11 × 85,820.18
  4. Step 4: Simplify right side
    157,440.38x = 18,645,901,401.94
  5. Step 5: Solve for x
    x = 18,645,901,401.94/157,440.38
  6. Step 6: Final answer
    x = 118,431.51

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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.