Home / 143,292.79-197,535.64-100,138.30

Finding the Fourth Proportional to 143,292.79, 197,535.64 and 100,138.30

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Solution

The fourth proportional to 143,292.79, 197,535.64 and 100,138.30 is: 138,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,292.79 : 197,535.64 = 100,138.30 : x
  2. Step 2: Convert to fraction form
    143,292.79/197,535.64 = 100,138.30/x
  3. Step 3: Cross multiply
    143,292.79x = 197,535.64 × 100,138.30
  4. Step 4: Simplify right side
    143,292.79x = 19,780,883,057.27
  5. Step 5: Solve for x
    x = 19,780,883,057.27/143,292.79
  6. Step 6: Final answer
    x = 138,045.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.