Home / 102,126.78-140,924.16-56,797.47

Finding the Fourth Proportional to 102,126.78, 140,924.16 and 56,797.47

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Solution

The fourth proportional to 102,126.78, 140,924.16 and 56,797.47 is: 78,374.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,126.78 : 140,924.16 = 56,797.47 : x
  2. Step 2: Convert to fraction form
    102,126.78/140,924.16 = 56,797.47/x
  3. Step 3: Cross multiply
    102,126.78x = 140,924.16 × 56,797.47
  4. Step 4: Simplify right side
    102,126.78x = 8,004,135,749.88
  5. Step 5: Solve for x
    x = 8,004,135,749.88/102,126.78
  6. Step 6: Final answer
    x = 78,374.50

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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.