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Finding the Fourth Proportional to 123,395.60, 185,287.80 and 70,907.60

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Solution

The fourth proportional to 123,395.60, 185,287.80 and 70,907.60 is: 106,473.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,395.60 : 185,287.80 = 70,907.60 : x
  2. Step 2: Convert to fraction form
    123,395.60/185,287.80 = 70,907.60/x
  3. Step 3: Cross multiply
    123,395.60x = 185,287.80 × 70,907.60
  4. Step 4: Simplify right side
    123,395.60x = 13,138,313,207.28
  5. Step 5: Solve for x
    x = 13,138,313,207.28/123,395.60
  6. Step 6: Final answer
    x = 106,473.11

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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.