Home / 129,315.70-194,119.35-99,864.10

Finding the Fourth Proportional to 129,315.70, 194,119.35 and 99,864.10

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Solution

The fourth proportional to 129,315.70, 194,119.35 and 99,864.10 is: 149,908.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,315.70 : 194,119.35 = 99,864.10 : x
  2. Step 2: Convert to fraction form
    129,315.70/194,119.35 = 99,864.10/x
  3. Step 3: Cross multiply
    129,315.70x = 194,119.35 × 99,864.10
  4. Step 4: Simplify right side
    129,315.70x = 19,385,554,180.34
  5. Step 5: Solve for x
    x = 19,385,554,180.34/129,315.70
  6. Step 6: Final answer
    x = 149,908.74

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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.