Home / 102,001.68-140,759.57-56,678.54

Finding the Fourth Proportional to 102,001.68, 140,759.57 and 56,678.54

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Solution

The fourth proportional to 102,001.68, 140,759.57 and 56,678.54 is: 78,214.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,001.68 : 140,759.57 = 56,678.54 : x
  2. Step 2: Convert to fraction form
    102,001.68/140,759.57 = 56,678.54/x
  3. Step 3: Cross multiply
    102,001.68x = 140,759.57 × 56,678.54
  4. Step 4: Simplify right side
    102,001.68x = 7,978,046,356.53
  5. Step 5: Solve for x
    x = 7,978,046,356.53/102,001.68
  6. Step 6: Final answer
    x = 78,214.85

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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.