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Finding the Fourth Proportional to 127,551.94, 175,948.38 and 79,722.28

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Solution

The fourth proportional to 127,551.94, 175,948.38 and 79,722.28 is: 109,970.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,551.94 : 175,948.38 = 79,722.28 : x
  2. Step 2: Convert to fraction form
    127,551.94/175,948.38 = 79,722.28/x
  3. Step 3: Cross multiply
    127,551.94x = 175,948.38 × 79,722.28
  4. Step 4: Simplify right side
    127,551.94x = 14,027,006,015.91
  5. Step 5: Solve for x
    x = 14,027,006,015.91/127,551.94
  6. Step 6: Final answer
    x = 109,970.93

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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.