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Finding the Fourth Proportional to 177,389.60, 266,084.40 and 78,893.60

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Solution

The fourth proportional to 177,389.60, 266,084.40 and 78,893.60 is: 118,340.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,389.60 : 266,084.40 = 78,893.60 : x
  2. Step 2: Convert to fraction form
    177,389.60/266,084.40 = 78,893.60/x
  3. Step 3: Cross multiply
    177,389.60x = 266,084.40 × 78,893.60
  4. Step 4: Simplify right side
    177,389.60x = 20,992,356,219.84
  5. Step 5: Solve for x
    x = 20,992,356,219.84/177,389.60
  6. Step 6: Final answer
    x = 118,340.40

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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.