Home / 102,112.47-140,875.88-75,318.48

Finding the Fourth Proportional to 102,112.47, 140,875.88 and 75,318.48

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Solution

The fourth proportional to 102,112.47, 140,875.88 and 75,318.48 is: 103,910.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,112.47 : 140,875.88 = 75,318.48 : x
  2. Step 2: Convert to fraction form
    102,112.47/140,875.88 = 75,318.48/x
  3. Step 3: Cross multiply
    102,112.47x = 140,875.88 × 75,318.48
  4. Step 4: Simplify right side
    102,112.47x = 10,610,556,773.67
  5. Step 5: Solve for x
    x = 10,610,556,773.67/102,112.47
  6. Step 6: Final answer
    x = 103,910.49

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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.