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Finding the Fourth Proportional to 105,133.52, 145,062.60 and 60,412.88

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Solution

The fourth proportional to 105,133.52, 145,062.60 and 60,412.88 is: 83,357.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,133.52 : 145,062.60 = 60,412.88 : x
  2. Step 2: Convert to fraction form
    105,133.52/145,062.60 = 60,412.88/x
  3. Step 3: Cross multiply
    105,133.52x = 145,062.60 × 60,412.88
  4. Step 4: Simplify right side
    105,133.52x = 8,763,649,446.29
  5. Step 5: Solve for x
    x = 8,763,649,446.29/105,133.52
  6. Step 6: Final answer
    x = 83,357.33

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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.