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Finding the Fourth Proportional to 127,039.91, 175,317.48 and 76,054.86

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Solution

The fourth proportional to 127,039.91, 175,317.48 and 76,054.86 is: 104,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,039.91 : 175,317.48 = 76,054.86 : x
  2. Step 2: Convert to fraction form
    127,039.91/175,317.48 = 76,054.86/x
  3. Step 3: Cross multiply
    127,039.91x = 175,317.48 × 76,054.86
  4. Step 4: Simplify right side
    127,039.91x = 13,333,746,396.95
  5. Step 5: Solve for x
    x = 13,333,746,396.95/127,039.91
  6. Step 6: Final answer
    x = 104,957.15

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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.