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Finding the Fourth Proportional to 127,955.52, 191,539.64 and 83,486.52

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Solution

The fourth proportional to 127,955.52, 191,539.64 and 83,486.52 is: 124,972.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,955.52 : 191,539.64 = 83,486.52 : x
  2. Step 2: Convert to fraction form
    127,955.52/191,539.64 = 83,486.52/x
  3. Step 3: Cross multiply
    127,955.52x = 191,539.64 × 83,486.52
  4. Step 4: Simplify right side
    127,955.52x = 15,990,977,985.65
  5. Step 5: Solve for x
    x = 15,990,977,985.65/127,955.52
  6. Step 6: Final answer
    x = 124,972.94

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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.