Home / 90,328.89-135,500.34-27,144.08

Finding the Fourth Proportional to 90,328.89, 135,500.34 and 27,144.08

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Solution

The fourth proportional to 90,328.89, 135,500.34 and 27,144.08 is: 40,718.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,328.89 : 135,500.34 = 27,144.08 : x
  2. Step 2: Convert to fraction form
    90,328.89/135,500.34 = 27,144.08/x
  3. Step 3: Cross multiply
    90,328.89x = 135,500.34 × 27,144.08
  4. Step 4: Simplify right side
    90,328.89x = 3,678,032,001.40
  5. Step 5: Solve for x
    x = 3,678,032,001.40/90,328.89
  6. Step 6: Final answer
    x = 40,718.23

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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.