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Finding the Fourth Proportional to 91,593.86, 138,119.57 and 90,344.84

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Solution

The fourth proportional to 91,593.86, 138,119.57 and 90,344.84 is: 136,236.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,593.86 : 138,119.57 = 90,344.84 : x
  2. Step 2: Convert to fraction form
    91,593.86/138,119.57 = 90,344.84/x
  3. Step 3: Cross multiply
    91,593.86x = 138,119.57 × 90,344.84
  4. Step 4: Simplify right side
    91,593.86x = 12,478,390,452.52
  5. Step 5: Solve for x
    x = 12,478,390,452.52/91,593.86
  6. Step 6: Final answer
    x = 136,236.10

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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.