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Finding the Fourth Proportional to 91,567.83, 137,975.70 and 75,292.45

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Solution

The fourth proportional to 91,567.83, 137,975.70 and 75,292.45 is: 113,451.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,567.83 : 137,975.70 = 75,292.45 : x
  2. Step 2: Convert to fraction form
    91,567.83/137,975.70 = 75,292.45/x
  3. Step 3: Cross multiply
    91,567.83x = 137,975.70 × 75,292.45
  4. Step 4: Simplify right side
    91,567.83x = 10,388,528,556.06
  5. Step 5: Solve for x
    x = 10,388,528,556.06/91,567.83
  6. Step 6: Final answer
    x = 113,451.73

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.