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Finding the Fourth Proportional to 192,080.04, 287,422.80 and 138,878.56

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Solution

The fourth proportional to 192,080.04, 287,422.80 and 138,878.56 is: 207,813.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,080.04 : 287,422.80 = 138,878.56 : x
  2. Step 2: Convert to fraction form
    192,080.04/287,422.80 = 138,878.56/x
  3. Step 3: Cross multiply
    192,080.04x = 287,422.80 × 138,878.56
  4. Step 4: Simplify right side
    192,080.04x = 39,916,864,575.17
  5. Step 5: Solve for x
    x = 39,916,864,575.17/192,080.04
  6. Step 6: Final answer
    x = 207,813.70

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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.