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Finding the Fourth Proportional to 127,192.65, 190,832.53 and 79,750.47

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Solution

The fourth proportional to 127,192.65, 190,832.53 and 79,750.47 is: 119,653.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,192.65 : 190,832.53 = 79,750.47 : x
  2. Step 2: Convert to fraction form
    127,192.65/190,832.53 = 79,750.47/x
  3. Step 3: Cross multiply
    127,192.65x = 190,832.53 × 79,750.47
  4. Step 4: Simplify right side
    127,192.65x = 15,218,984,848.87
  5. Step 5: Solve for x
    x = 15,218,984,848.87/127,192.65
  6. Step 6: Final answer
    x = 119,653.02

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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.