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Finding the Fourth Proportional to 90,213, 135,320.06 and 23,652.53

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Solution

The fourth proportional to 90,213, 135,320.06 and 23,652.53 is: 35,478.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,213 : 135,320.06 = 23,652.53 : x
  2. Step 2: Convert to fraction form
    90,213/135,320.06 = 23,652.53/x
  3. Step 3: Cross multiply
    90,213x = 135,320.06 × 23,652.53
  4. Step 4: Simplify right side
    90,213x = 3,200,661,778.75
  5. Step 5: Solve for x
    x = 3,200,661,778.75/90,213
  6. Step 6: Final answer
    x = 35,478.94

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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.