Home / 90,106.49-135,179.08-26,931.56

Finding the Fourth Proportional to 90,106.49, 135,179.08 and 26,931.56

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Solution

The fourth proportional to 90,106.49, 135,179.08 and 26,931.56 is: 40,403.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,106.49 : 135,179.08 = 26,931.56 : x
  2. Step 2: Convert to fraction form
    90,106.49/135,179.08 = 26,931.56/x
  3. Step 3: Cross multiply
    90,106.49x = 135,179.08 × 26,931.56
  4. Step 4: Simplify right side
    90,106.49x = 3,640,582,760.54
  5. Step 5: Solve for x
    x = 3,640,582,760.54/90,106.49
  6. Step 6: Final answer
    x = 40,403.11

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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.