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Finding the Fourth Proportional to 103,671.06, 155,503.71 and 72,526.74

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Solution

The fourth proportional to 103,671.06, 155,503.71 and 72,526.74 is: 108,788.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,671.06 : 155,503.71 = 72,526.74 : x
  2. Step 2: Convert to fraction form
    103,671.06/155,503.71 = 72,526.74/x
  3. Step 3: Cross multiply
    103,671.06x = 155,503.71 × 72,526.74
  4. Step 4: Simplify right side
    103,671.06x = 11,278,177,144.21
  5. Step 5: Solve for x
    x = 11,278,177,144.21/103,671.06
  6. Step 6: Final answer
    x = 108,788.10

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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.