Home / 103,727.79-155,355.57-91,757.61

Finding the Fourth Proportional to 103,727.79, 155,355.57 and 91,757.61

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Solution

The fourth proportional to 103,727.79, 155,355.57 and 91,757.61 is: 137,427.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,727.79 : 155,355.57 = 91,757.61 : x
  2. Step 2: Convert to fraction form
    103,727.79/155,355.57 = 91,757.61/x
  3. Step 3: Cross multiply
    103,727.79x = 155,355.57 × 91,757.61
  4. Step 4: Simplify right side
    103,727.79x = 14,255,055,803.39
  5. Step 5: Solve for x
    x = 14,255,055,803.39/103,727.79
  6. Step 6: Final answer
    x = 137,427.55

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1.5x scale

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.