Home / 143,658.90-215,416.26-83,706.75

Finding the Fourth Proportional to 143,658.90, 215,416.26 and 83,706.75

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Solution

The fourth proportional to 143,658.90, 215,416.26 and 83,706.75 is: 125,518.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,658.90 : 215,416.26 = 83,706.75 : x
  2. Step 2: Convert to fraction form
    143,658.90/215,416.26 = 83,706.75/x
  3. Step 3: Cross multiply
    143,658.90x = 215,416.26 × 83,706.75
  4. Step 4: Simplify right side
    143,658.90x = 18,031,795,021.76
  5. Step 5: Solve for x
    x = 18,031,795,021.76/143,658.90
  6. Step 6: Final answer
    x = 125,518.12

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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.