Home / 90,130.08-135,204.30-30,958.08

Finding the Fourth Proportional to 90,130.08, 135,204.30 and 30,958.08

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Solution

The fourth proportional to 90,130.08, 135,204.30 and 30,958.08 is: 46,440.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,130.08 : 135,204.30 = 30,958.08 : x
  2. Step 2: Convert to fraction form
    90,130.08/135,204.30 = 30,958.08/x
  3. Step 3: Cross multiply
    90,130.08x = 135,204.30 × 30,958.08
  4. Step 4: Simplify right side
    90,130.08x = 4,185,665,535.74
  5. Step 5: Solve for x
    x = 4,185,665,535.74/90,130.08
  6. Step 6: Final answer
    x = 46,440.27

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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.