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Finding the Fourth Proportional to 103,058.58, 155,289.86 and 84,748.73

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Solution

The fourth proportional to 103,058.58, 155,289.86 and 84,748.73 is: 127,700.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,058.58 : 155,289.86 = 84,748.73 : x
  2. Step 2: Convert to fraction form
    103,058.58/155,289.86 = 84,748.73/x
  3. Step 3: Cross multiply
    103,058.58x = 155,289.86 × 84,748.73
  4. Step 4: Simplify right side
    103,058.58x = 13,160,618,408.00
  5. Step 5: Solve for x
    x = 13,160,618,408.00/103,058.58
  6. Step 6: Final answer
    x = 127,700.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.