Home / 137,860.48-190,238.70-77,429.56

Finding the Fourth Proportional to 137,860.48, 190,238.70 and 77,429.56

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Solution

The fourth proportional to 137,860.48, 190,238.70 and 77,429.56 is: 106,847.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,860.48 : 190,238.70 = 77,429.56 : x
  2. Step 2: Convert to fraction form
    137,860.48/190,238.70 = 77,429.56/x
  3. Step 3: Cross multiply
    137,860.48x = 190,238.70 × 77,429.56
  4. Step 4: Simplify right side
    137,860.48x = 14,730,098,835.97
  5. Step 5: Solve for x
    x = 14,730,098,835.97/137,860.48
  6. Step 6: Final answer
    x = 106,847.87

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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.