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Finding the Fourth Proportional to 175,042.80, 262,103.40 and 128,041.20

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Solution

The fourth proportional to 175,042.80, 262,103.40 and 128,041.20 is: 191,724.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,042.80 : 262,103.40 = 128,041.20 : x
  2. Step 2: Convert to fraction form
    175,042.80/262,103.40 = 128,041.20/x
  3. Step 3: Cross multiply
    175,042.80x = 262,103.40 × 128,041.20
  4. Step 4: Simplify right side
    175,042.80x = 33,560,033,860.08
  5. Step 5: Solve for x
    x = 33,560,033,860.08/175,042.80
  6. Step 6: Final answer
    x = 191,724.73

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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.