Home / 90,129.58-135,197.51-30,964.82

Finding the Fourth Proportional to 90,129.58, 135,197.51 and 30,964.82

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Solution

The fourth proportional to 90,129.58, 135,197.51 and 30,964.82 is: 46,448.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,129.58 : 135,197.51 = 30,964.82 : x
  2. Step 2: Convert to fraction form
    90,129.58/135,197.51 = 30,964.82/x
  3. Step 3: Cross multiply
    90,129.58x = 135,197.51 × 30,964.82
  4. Step 4: Simplify right side
    90,129.58x = 4,186,365,730.79
  5. Step 5: Solve for x
    x = 4,186,365,730.79/90,129.58
  6. Step 6: Final answer
    x = 46,448.30

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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.