Home / 129,262.20-194,039.10-99,810.60

Finding the Fourth Proportional to 129,262.20, 194,039.10 and 99,810.60

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Solution

The fourth proportional to 129,262.20, 194,039.10 and 99,810.60 is: 149,828.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,262.20 : 194,039.10 = 99,810.60 : x
  2. Step 2: Convert to fraction form
    129,262.20/194,039.10 = 99,810.60/x
  3. Step 3: Cross multiply
    129,262.20x = 194,039.10 × 99,810.60
  4. Step 4: Simplify right side
    129,262.20x = 19,367,158,994.46
  5. Step 5: Solve for x
    x = 19,367,158,994.46/129,262.20
  6. Step 6: Final answer
    x = 149,828.48

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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.