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Finding the Fourth Proportional to 103,346.79, 155,060.43 and 83,540.77

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Solution

The fourth proportional to 103,346.79, 155,060.43 and 83,540.77 is: 125,343.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,346.79 : 155,060.43 = 83,540.77 : x
  2. Step 2: Convert to fraction form
    103,346.79/155,060.43 = 83,540.77/x
  3. Step 3: Cross multiply
    103,346.79x = 155,060.43 × 83,540.77
  4. Step 4: Simplify right side
    103,346.79x = 12,953,867,017.80
  5. Step 5: Solve for x
    x = 12,953,867,017.80/103,346.79
  6. Step 6: Final answer
    x = 125,343.68

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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.