Home / 157,338.35-217,126.28-85,718.15

Finding the Fourth Proportional to 157,338.35, 217,126.28 and 85,718.15

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Solution

The fourth proportional to 157,338.35, 217,126.28 and 85,718.15 is: 118,290.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,338.35 : 217,126.28 = 85,718.15 : x
  2. Step 2: Convert to fraction form
    157,338.35/217,126.28 = 85,718.15/x
  3. Step 3: Cross multiply
    157,338.35x = 217,126.28 × 85,718.15
  4. Step 4: Simplify right side
    157,338.35x = 18,611,662,609.39
  5. Step 5: Solve for x
    x = 18,611,662,609.39/157,338.35
  6. Step 6: Final answer
    x = 118,290.69

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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.