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Finding the Fourth Proportional to 88,941.80, 133,084.65 and 81,068.60

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Solution

The fourth proportional to 88,941.80, 133,084.65 and 81,068.60 is: 121,303.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,941.80 : 133,084.65 = 81,068.60 : x
  2. Step 2: Convert to fraction form
    88,941.80/133,084.65 = 81,068.60/x
  3. Step 3: Cross multiply
    88,941.80x = 133,084.65 × 81,068.60
  4. Step 4: Simplify right side
    88,941.80x = 10,788,986,256.99
  5. Step 5: Solve for x
    x = 10,788,986,256.99/88,941.80
  6. Step 6: Final answer
    x = 121,303.89

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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.