Home / 92,839.28-139,515.96-90,588.56

Finding the Fourth Proportional to 92,839.28, 139,515.96 and 90,588.56

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Solution

The fourth proportional to 92,839.28, 139,515.96 and 90,588.56 is: 136,133.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,839.28 : 139,515.96 = 90,588.56 : x
  2. Step 2: Convert to fraction form
    92,839.28/139,515.96 = 90,588.56/x
  3. Step 3: Cross multiply
    92,839.28x = 139,515.96 × 90,588.56
  4. Step 4: Simplify right side
    92,839.28x = 12,638,549,913.42
  5. Step 5: Solve for x
    x = 12,638,549,913.42/92,839.28
  6. Step 6: Final answer
    x = 136,133.65

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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.