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Finding the Fourth Proportional to 143,307.61, 214,961.15 and 38,126.58

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Solution

The fourth proportional to 143,307.61, 214,961.15 and 38,126.58 is: 57,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,307.61 : 214,961.15 = 38,126.58 : x
  2. Step 2: Convert to fraction form
    143,307.61/214,961.15 = 38,126.58/x
  3. Step 3: Cross multiply
    143,307.61x = 214,961.15 × 38,126.58
  4. Step 4: Simplify right side
    143,307.61x = 8,195,732,771.58
  5. Step 5: Solve for x
    x = 8,195,732,771.58/143,307.61
  6. Step 6: Final answer
    x = 57,189.80

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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.