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Finding the Fourth Proportional to 172,653.81, 259,015.95 and 72,813.83

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Solution

The fourth proportional to 172,653.81, 259,015.95 and 72,813.83 is: 109,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,653.81 : 259,015.95 = 72,813.83 : x
  2. Step 2: Convert to fraction form
    172,653.81/259,015.95 = 72,813.83/x
  3. Step 3: Cross multiply
    172,653.81x = 259,015.95 × 72,813.83
  4. Step 4: Simplify right side
    172,653.81x = 18,859,942,055.51
  5. Step 5: Solve for x
    x = 18,859,942,055.51/172,653.81
  6. Step 6: Final answer
    x = 109,235.60

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1.5x scale

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.