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Finding the Fourth Proportional to 157,701.16, 217,595.11 and 90,620.20

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Solution

The fourth proportional to 157,701.16, 217,595.11 and 90,620.20 is: 125,037.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,701.16 : 217,595.11 = 90,620.20 : x
  2. Step 2: Convert to fraction form
    157,701.16/217,595.11 = 90,620.20/x
  3. Step 3: Cross multiply
    157,701.16x = 217,595.11 × 90,620.20
  4. Step 4: Simplify right side
    157,701.16x = 19,718,510,846.15
  5. Step 5: Solve for x
    x = 19,718,510,846.15/157,701.16
  6. Step 6: Final answer
    x = 125,037.20

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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.