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Finding the Fourth Proportional to 127,203.87, 175,617.50 and 79,521.81

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Solution

The fourth proportional to 127,203.87, 175,617.50 and 79,521.81 is: 109,787.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,203.87 : 175,617.50 = 79,521.81 : x
  2. Step 2: Convert to fraction form
    127,203.87/175,617.50 = 79,521.81/x
  3. Step 3: Cross multiply
    127,203.87x = 175,617.50 × 79,521.81
  4. Step 4: Simplify right side
    127,203.87x = 13,965,421,070.07
  5. Step 5: Solve for x
    x = 13,965,421,070.07/127,203.87
  6. Step 6: Final answer
    x = 109,787.71

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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.