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Finding the Fourth Proportional to 127,539.84, 175,957.44 and 79,775.04

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Solution

The fourth proportional to 127,539.84, 175,957.44 and 79,775.04 is: 110,059.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,539.84 : 175,957.44 = 79,775.04 : x
  2. Step 2: Convert to fraction form
    127,539.84/175,957.44 = 79,775.04/x
  3. Step 3: Cross multiply
    127,539.84x = 175,957.44 × 79,775.04
  4. Step 4: Simplify right side
    127,539.84x = 14,037,011,814.30
  5. Step 5: Solve for x
    x = 14,037,011,814.30/127,539.84
  6. Step 6: Final answer
    x = 110,059.82

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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.