Home / 90,322.12-135,446.10-27,120.16

Finding the Fourth Proportional to 90,322.12, 135,446.10 and 27,120.16

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Solution

The fourth proportional to 90,322.12, 135,446.10 and 27,120.16 is: 40,669.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,322.12 : 135,446.10 = 27,120.16 : x
  2. Step 2: Convert to fraction form
    90,322.12/135,446.10 = 27,120.16/x
  3. Step 3: Cross multiply
    90,322.12x = 135,446.10 × 27,120.16
  4. Step 4: Simplify right side
    90,322.12x = 3,673,319,903.38
  5. Step 5: Solve for x
    x = 3,673,319,903.38/90,322.12
  6. Step 6: Final answer
    x = 40,669.11

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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.