Home / 90,939.12-125,501.72-51,197.68

Finding the Fourth Proportional to 90,939.12, 125,501.72 and 51,197.68

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Solution

The fourth proportional to 90,939.12, 125,501.72 and 51,197.68 is: 70,656.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,939.12 : 125,501.72 = 51,197.68 : x
  2. Step 2: Convert to fraction form
    90,939.12/125,501.72 = 51,197.68/x
  3. Step 3: Cross multiply
    90,939.12x = 125,501.72 × 51,197.68
  4. Step 4: Simplify right side
    90,939.12x = 6,425,396,900.01
  5. Step 5: Solve for x
    x = 6,425,396,900.01/90,939.12
  6. Step 6: Final answer
    x = 70,656.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.