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Finding the Fourth Proportional to 91,567.64, 137,975.39 and 75,292.25

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Solution

The fourth proportional to 91,567.64, 137,975.39 and 75,292.25 is: 113,451.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,567.64 : 137,975.39 = 75,292.25 : x
  2. Step 2: Convert to fraction form
    91,567.64/137,975.39 = 75,292.25/x
  3. Step 3: Cross multiply
    91,567.64x = 137,975.39 × 75,292.25
  4. Step 4: Simplify right side
    91,567.64x = 10,388,477,557.73
  5. Step 5: Solve for x
    x = 10,388,477,557.73/91,567.64
  6. Step 6: Final answer
    x = 113,451.41

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1.5x scale

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.