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Finding the Fourth Proportional to 124,563.20, 186,844.80 and 123,785.60

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Solution

The fourth proportional to 124,563.20, 186,844.80 and 123,785.60 is: 185,678.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,563.20 : 186,844.80 = 123,785.60 : x
  2. Step 2: Convert to fraction form
    124,563.20/186,844.80 = 123,785.60/x
  3. Step 3: Cross multiply
    124,563.20x = 186,844.80 × 123,785.60
  4. Step 4: Simplify right side
    124,563.20x = 23,128,695,674.88
  5. Step 5: Solve for x
    x = 23,128,695,674.88/124,563.20
  6. Step 6: Final answer
    x = 185,678.40

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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.