Home / 90,403.67-135,628.09-63,801.61

Finding the Fourth Proportional to 90,403.67, 135,628.09 and 63,801.61

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Solution

The fourth proportional to 90,403.67, 135,628.09 and 63,801.61 is: 95,718.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,403.67 : 135,628.09 = 63,801.61 : x
  2. Step 2: Convert to fraction form
    90,403.67/135,628.09 = 63,801.61/x
  3. Step 3: Cross multiply
    90,403.67x = 135,628.09 × 63,801.61
  4. Step 4: Simplify right side
    90,403.67x = 8,653,290,004.65
  5. Step 5: Solve for x
    x = 8,653,290,004.65/90,403.67
  6. Step 6: Final answer
    x = 95,718.35

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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.