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Finding the Fourth Proportional to 103,470.40, 155,205.60 and 41,140.90

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Solution

The fourth proportional to 103,470.40, 155,205.60 and 41,140.90 is: 61,711.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,470.40 : 155,205.60 = 41,140.90 : x
  2. Step 2: Convert to fraction form
    103,470.40/155,205.60 = 41,140.90/x
  3. Step 3: Cross multiply
    103,470.40x = 155,205.60 × 41,140.90
  4. Step 4: Simplify right side
    103,470.40x = 6,385,298,069.04
  5. Step 5: Solve for x
    x = 6,385,298,069.04/103,470.40
  6. Step 6: Final answer
    x = 61,711.35

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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.