Home / 119,921.40-179,882.10-100,384.20

Finding the Fourth Proportional to 119,921.40, 179,882.10 and 100,384.20

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Solution

The fourth proportional to 119,921.40, 179,882.10 and 100,384.20 is: 150,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,921.40 : 179,882.10 = 100,384.20 : x
  2. Step 2: Convert to fraction form
    119,921.40/179,882.10 = 100,384.20/x
  3. Step 3: Cross multiply
    119,921.40x = 179,882.10 × 100,384.20
  4. Step 4: Simplify right side
    119,921.40x = 18,057,320,702.82
  5. Step 5: Solve for x
    x = 18,057,320,702.82/119,921.40
  6. Step 6: Final answer
    x = 150,576.30

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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.