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Finding the Fourth Proportional to 115,447.68, 173,119.68 and 53,136

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Solution

The fourth proportional to 115,447.68, 173,119.68 and 53,136 is: 79,680.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,447.68 : 173,119.68 = 53,136 : x
  2. Step 2: Convert to fraction form
    115,447.68/173,119.68 = 53,136/x
  3. Step 3: Cross multiply
    115,447.68x = 173,119.68 × 53,136
  4. Step 4: Simplify right side
    115,447.68x = 9,198,887,316.48
  5. Step 5: Solve for x
    x = 9,198,887,316.48/115,447.68
  6. Step 6: Final answer
    x = 79,680.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.