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Finding the Fourth Proportional to 144,078.61, 216,270.09 and 80,952.68

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Solution

The fourth proportional to 144,078.61, 216,270.09 and 80,952.68 is: 121,514.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,078.61 : 216,270.09 = 80,952.68 : x
  2. Step 2: Convert to fraction form
    144,078.61/216,270.09 = 80,952.68/x
  3. Step 3: Cross multiply
    144,078.61x = 216,270.09 × 80,952.68
  4. Step 4: Simplify right side
    144,078.61x = 17,507,641,903.23
  5. Step 5: Solve for x
    x = 17,507,641,903.23/144,078.61
  6. Step 6: Final answer
    x = 121,514.52

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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.