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Finding the Fourth Proportional to 103,494.70, 155,212 and 40,300.70

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Solution

The fourth proportional to 103,494.70, 155,212 and 40,300.70 is: 60,439.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,494.70 : 155,212 = 40,300.70 : x
  2. Step 2: Convert to fraction form
    103,494.70/155,212 = 40,300.70/x
  3. Step 3: Cross multiply
    103,494.70x = 155,212 × 40,300.70
  4. Step 4: Simplify right side
    103,494.70x = 6,255,152,248.40
  5. Step 5: Solve for x
    x = 6,255,152,248.40/103,494.70
  6. Step 6: Final answer
    x = 60,439.35

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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.