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Finding the Fourth Proportional to 145,854.64, 218,786.64 and 46,015.76

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Solution

The fourth proportional to 145,854.64, 218,786.64 and 46,015.76 is: 69,025.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,854.64 : 218,786.64 = 46,015.76 : x
  2. Step 2: Convert to fraction form
    145,854.64/218,786.64 = 46,015.76/x
  3. Step 3: Cross multiply
    145,854.64x = 218,786.64 × 46,015.76
  4. Step 4: Simplify right side
    145,854.64x = 10,067,633,517.45
  5. Step 5: Solve for x
    x = 10,067,633,517.45/145,854.64
  6. Step 6: Final answer
    x = 69,025.12

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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.