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Finding the Fourth Proportional to 103,522.70, 155,284.05 and 91,056.80

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Solution

The fourth proportional to 103,522.70, 155,284.05 and 91,056.80 is: 136,585.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,522.70 : 155,284.05 = 91,056.80 : x
  2. Step 2: Convert to fraction form
    103,522.70/155,284.05 = 91,056.80/x
  3. Step 3: Cross multiply
    103,522.70x = 155,284.05 × 91,056.80
  4. Step 4: Simplify right side
    103,522.70x = 14,139,668,684.04
  5. Step 5: Solve for x
    x = 14,139,668,684.04/103,522.70
  6. Step 6: Final answer
    x = 136,585.20

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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.