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Finding the Fourth Proportional to 143,846.10, 215,866.35 and 80,666.10

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Solution

The fourth proportional to 143,846.10, 215,866.35 and 80,666.10 is: 121,053.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,846.10 : 215,866.35 = 80,666.10 : x
  2. Step 2: Convert to fraction form
    143,846.10/215,866.35 = 80,666.10/x
  3. Step 3: Cross multiply
    143,846.10x = 215,866.35 × 80,666.10
  4. Step 4: Simplify right side
    143,846.10x = 17,413,096,575.74
  5. Step 5: Solve for x
    x = 17,413,096,575.74/143,846.10
  6. Step 6: Final answer
    x = 121,053.66

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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.