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Finding the Fourth Proportional to 155,168.68, 214,157.10 and 91,513.48

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Solution

The fourth proportional to 155,168.68, 214,157.10 and 91,513.48 is: 126,302.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,168.68 : 214,157.10 = 91,513.48 : x
  2. Step 2: Convert to fraction form
    155,168.68/214,157.10 = 91,513.48/x
  3. Step 3: Cross multiply
    155,168.68x = 214,157.10 × 91,513.48
  4. Step 4: Simplify right side
    155,168.68x = 19,598,261,487.71
  5. Step 5: Solve for x
    x = 19,598,261,487.71/155,168.68
  6. Step 6: Final answer
    x = 126,302.95

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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.