Home / 90,215.64-135,322.25-53,011.73

Finding the Fourth Proportional to 90,215.64, 135,322.25 and 53,011.73

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Solution

The fourth proportional to 90,215.64, 135,322.25 and 53,011.73 is: 79,516.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,215.64 : 135,322.25 = 53,011.73 : x
  2. Step 2: Convert to fraction form
    90,215.64/135,322.25 = 53,011.73/x
  3. Step 3: Cross multiply
    90,215.64x = 135,322.25 × 53,011.73
  4. Step 4: Simplify right side
    90,215.64x = 7,173,666,653.24
  5. Step 5: Solve for x
    x = 7,173,666,653.24/90,215.64
  6. Step 6: Final answer
    x = 79,516.88

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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.