Home / 154,287.56-231,279.51-90,164.32

Finding the Fourth Proportional to 154,287.56, 231,279.51 and 90,164.32

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Solution

The fourth proportional to 154,287.56, 231,279.51 and 90,164.32 is: 135,157.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,287.56 : 231,279.51 = 90,164.32 : x
  2. Step 2: Convert to fraction form
    154,287.56/231,279.51 = 90,164.32/x
  3. Step 3: Cross multiply
    154,287.56x = 231,279.51 × 90,164.32
  4. Step 4: Simplify right side
    154,287.56x = 20,853,159,509.00
  5. Step 5: Solve for x
    x = 20,853,159,509.00/154,287.56
  6. Step 6: Final answer
    x = 135,157.75

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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.