Home / 90,181.12-135,270.32-31,017.31

Finding the Fourth Proportional to 90,181.12, 135,270.32 and 31,017.31

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Solution

The fourth proportional to 90,181.12, 135,270.32 and 31,017.31 is: 46,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,181.12 : 135,270.32 = 31,017.31 : x
  2. Step 2: Convert to fraction form
    90,181.12/135,270.32 = 31,017.31/x
  3. Step 3: Cross multiply
    90,181.12x = 135,270.32 × 31,017.31
  4. Step 4: Simplify right side
    90,181.12x = 4,195,721,449.24
  5. Step 5: Solve for x
    x = 4,195,721,449.24/90,181.12
  6. Step 6: Final answer
    x = 46,525.50

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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.