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Finding the Fourth Proportional to 157,476.68, 217,263.30 and 100,919.24

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Solution

The fourth proportional to 157,476.68, 217,263.30 and 100,919.24 is: 139,233.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,476.68 : 217,263.30 = 100,919.24 : x
  2. Step 2: Convert to fraction form
    157,476.68/217,263.30 = 100,919.24/x
  3. Step 3: Cross multiply
    157,476.68x = 217,263.30 × 100,919.24
  4. Step 4: Simplify right side
    157,476.68x = 21,926,047,115.89
  5. Step 5: Solve for x
    x = 21,926,047,115.89/157,476.68
  6. Step 6: Final answer
    x = 139,233.61

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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.