Home / 90,667.26-135,089.62-85,574.20

Finding the Fourth Proportional to 90,667.26, 135,089.62 and 85,574.20

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Solution

The fourth proportional to 90,667.26, 135,089.62 and 85,574.20 is: 127,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,667.26 : 135,089.62 = 85,574.20 : x
  2. Step 2: Convert to fraction form
    90,667.26/135,089.62 = 85,574.20/x
  3. Step 3: Cross multiply
    90,667.26x = 135,089.62 × 85,574.20
  4. Step 4: Simplify right side
    90,667.26x = 11,560,186,159.80
  5. Step 5: Solve for x
    x = 11,560,186,159.80/90,667.26
  6. Step 6: Final answer
    x = 127,501.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.