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Finding the Fourth Proportional to 105,654.98, 145,789.80 and 60,330.08

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Solution

The fourth proportional to 105,654.98, 145,789.80 and 60,330.08 is: 83,247.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,654.98 : 145,789.80 = 60,330.08 : x
  2. Step 2: Convert to fraction form
    105,654.98/145,789.80 = 60,330.08/x
  3. Step 3: Cross multiply
    105,654.98x = 145,789.80 × 60,330.08
  4. Step 4: Simplify right side
    105,654.98x = 8,795,510,297.18
  5. Step 5: Solve for x
    x = 8,795,510,297.18/105,654.98
  6. Step 6: Final answer
    x = 83,247.47

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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.