Home / 90,975.36-136,437.12-57,645.12

Finding the Fourth Proportional to 90,975.36, 136,437.12 and 57,645.12

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Solution

The fourth proportional to 90,975.36, 136,437.12 and 57,645.12 is: 86,451.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,975.36 : 136,437.12 = 57,645.12 : x
  2. Step 2: Convert to fraction form
    90,975.36/136,437.12 = 57,645.12/x
  3. Step 3: Cross multiply
    90,975.36x = 136,437.12 × 57,645.12
  4. Step 4: Simplify right side
    90,975.36x = 7,864,934,154.85
  5. Step 5: Solve for x
    x = 7,864,934,154.85/90,975.36
  6. Step 6: Final answer
    x = 86,451.26

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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.