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Finding the Fourth Proportional to 143,674.50, 215,510.54 and 53,739.90

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Solution

The fourth proportional to 143,674.50, 215,510.54 and 53,739.90 is: 80,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,674.50 : 215,510.54 = 53,739.90 : x
  2. Step 2: Convert to fraction form
    143,674.50/215,510.54 = 53,739.90/x
  3. Step 3: Cross multiply
    143,674.50x = 215,510.54 × 53,739.90
  4. Step 4: Simplify right side
    143,674.50x = 11,581,514,868.55
  5. Step 5: Solve for x
    x = 11,581,514,868.55/143,674.50
  6. Step 6: Final answer
    x = 80,609.40

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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.