Home / 90,179.12-135,267.32-31,015.31

Finding the Fourth Proportional to 90,179.12, 135,267.32 and 31,015.31

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Solution

The fourth proportional to 90,179.12, 135,267.32 and 31,015.31 is: 46,522.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,179.12 : 135,267.32 = 31,015.31 : x
  2. Step 2: Convert to fraction form
    90,179.12/135,267.32 = 31,015.31/x
  3. Step 3: Cross multiply
    90,179.12x = 135,267.32 × 31,015.31
  4. Step 4: Simplify right side
    90,179.12x = 4,195,357,089.41
  5. Step 5: Solve for x
    x = 4,195,357,089.41/90,179.12
  6. Step 6: Final answer
    x = 46,522.49

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Double scale
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Similar ratio
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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.