Home / 145,918.08-218,878.08-126,138.24

Finding the Fourth Proportional to 145,918.08, 218,878.08 and 126,138.24

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Solution

The fourth proportional to 145,918.08, 218,878.08 and 126,138.24 is: 189,208.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,918.08 : 218,878.08 = 126,138.24 : x
  2. Step 2: Convert to fraction form
    145,918.08/218,878.08 = 126,138.24/x
  3. Step 3: Cross multiply
    145,918.08x = 218,878.08 × 126,138.24
  4. Step 4: Simplify right side
    145,918.08x = 27,608,895,785.78
  5. Step 5: Solve for x
    x = 27,608,895,785.78/145,918.08
  6. Step 6: Final answer
    x = 189,208.19

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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.