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Finding the Fourth Proportional to 103,776.80, 155,415.72 and 59,268.64

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Solution

The fourth proportional to 103,776.80, 155,415.72 and 59,268.64 is: 88,760.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,776.80 : 155,415.72 = 59,268.64 : x
  2. Step 2: Convert to fraction form
    103,776.80/155,415.72 = 59,268.64/x
  3. Step 3: Cross multiply
    103,776.80x = 155,415.72 × 59,268.64
  4. Step 4: Simplify right side
    103,776.80x = 9,211,278,359.02
  5. Step 5: Solve for x
    x = 9,211,278,359.02/103,776.80
  6. Step 6: Final answer
    x = 88,760.48

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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.