Home / 138,868.53-191,638.14-75,206.31

Finding the Fourth Proportional to 138,868.53, 191,638.14 and 75,206.31

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Solution

The fourth proportional to 138,868.53, 191,638.14 and 75,206.31 is: 103,784.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,868.53 : 191,638.14 = 75,206.31 : x
  2. Step 2: Convert to fraction form
    138,868.53/191,638.14 = 75,206.31/x
  3. Step 3: Cross multiply
    138,868.53x = 191,638.14 × 75,206.31
  4. Step 4: Simplify right side
    138,868.53x = 14,412,397,364.66
  5. Step 5: Solve for x
    x = 14,412,397,364.66/138,868.53
  6. Step 6: Final answer
    x = 103,784.47

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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.