Home / 103,131.41-142,320.78-62,836.74

Finding the Fourth Proportional to 103,131.41, 142,320.78 and 62,836.74

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Solution

The fourth proportional to 103,131.41, 142,320.78 and 62,836.74 is: 86,714.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,131.41 : 142,320.78 = 62,836.74 : x
  2. Step 2: Convert to fraction form
    103,131.41/142,320.78 = 62,836.74/x
  3. Step 3: Cross multiply
    103,131.41x = 142,320.78 × 62,836.74
  4. Step 4: Simplify right side
    103,131.41x = 8,942,973,849.46
  5. Step 5: Solve for x
    x = 8,942,973,849.46/103,131.41
  6. Step 6: Final answer
    x = 86,714.36

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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.