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Finding the Fourth Proportional to 127,129.84, 175,364.06 and 81,793.33

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Solution

The fourth proportional to 127,129.84, 175,364.06 and 81,793.33 is: 112,826.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,129.84 : 175,364.06 = 81,793.33 : x
  2. Step 2: Convert to fraction form
    127,129.84/175,364.06 = 81,793.33/x
  3. Step 3: Cross multiply
    127,129.84x = 175,364.06 × 81,793.33
  4. Step 4: Simplify right side
    127,129.84x = 14,343,609,582.34
  5. Step 5: Solve for x
    x = 14,343,609,582.34/127,129.84
  6. Step 6: Final answer
    x = 112,826.46

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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.