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Finding the Fourth Proportional to 105,959.78, 146,159.64 and 62,910.07

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Solution

The fourth proportional to 105,959.78, 146,159.64 and 62,910.07 is: 86,777.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,959.78 : 146,159.64 = 62,910.07 : x
  2. Step 2: Convert to fraction form
    105,959.78/146,159.64 = 62,910.07/x
  3. Step 3: Cross multiply
    105,959.78x = 146,159.64 × 62,910.07
  4. Step 4: Simplify right side
    105,959.78x = 9,194,912,818.18
  5. Step 5: Solve for x
    x = 9,194,912,818.18/105,959.78
  6. Step 6: Final answer
    x = 86,777.39

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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.