Home / 155,002.72-213,878.26-91,331.86

Finding the Fourth Proportional to 155,002.72, 213,878.26 and 91,331.86

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Solution

The fourth proportional to 155,002.72, 213,878.26 and 91,331.86 is: 126,022.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,002.72 : 213,878.26 = 91,331.86 : x
  2. Step 2: Convert to fraction form
    155,002.72/213,878.26 = 91,331.86/x
  3. Step 3: Cross multiply
    155,002.72x = 213,878.26 × 91,331.86
  4. Step 4: Simplify right side
    155,002.72x = 19,533,899,299.36
  5. Step 5: Solve for x
    x = 19,533,899,299.36/155,002.72
  6. Step 6: Final answer
    x = 126,022.95

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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.