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Finding the Fourth Proportional to 115,277.58, 159,107.79 and 72,809.10

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Solution

The fourth proportional to 115,277.58, 159,107.79 and 72,809.10 is: 100,492.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,277.58 : 159,107.79 = 72,809.10 : x
  2. Step 2: Convert to fraction form
    115,277.58/159,107.79 = 72,809.10/x
  3. Step 3: Cross multiply
    115,277.58x = 159,107.79 × 72,809.10
  4. Step 4: Simplify right side
    115,277.58x = 11,584,494,992.89
  5. Step 5: Solve for x
    x = 11,584,494,992.89/115,277.58
  6. Step 6: Final answer
    x = 100,492.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.