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Finding the Fourth Proportional to 157,578.21, 217,486.13 and 93,920.04

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Solution

The fourth proportional to 157,578.21, 217,486.13 and 93,920.04 is: 129,626.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,578.21 : 217,486.13 = 93,920.04 : x
  2. Step 2: Convert to fraction form
    157,578.21/217,486.13 = 93,920.04/x
  3. Step 3: Cross multiply
    157,578.21x = 217,486.13 × 93,920.04
  4. Step 4: Simplify right side
    157,578.21x = 20,426,305,559.45
  5. Step 5: Solve for x
    x = 20,426,305,559.45/157,578.21
  6. Step 6: Final answer
    x = 129,626.46

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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.