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Finding the Fourth Proportional to 192,075.40, 288,113.10 and 129,089.80

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Solution

The fourth proportional to 192,075.40, 288,113.10 and 129,089.80 is: 193,634.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,075.40 : 288,113.10 = 129,089.80 : x
  2. Step 2: Convert to fraction form
    192,075.40/288,113.10 = 129,089.80/x
  3. Step 3: Cross multiply
    192,075.40x = 288,113.10 × 129,089.80
  4. Step 4: Simplify right side
    192,075.40x = 37,192,462,456.38
  5. Step 5: Solve for x
    x = 37,192,462,456.38/192,075.40
  6. Step 6: Final answer
    x = 193,634.70

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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.