Home / 138,715.56-191,427.45-75,053.36

Finding the Fourth Proportional to 138,715.56, 191,427.45 and 75,053.36

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Solution

The fourth proportional to 138,715.56, 191,427.45 and 75,053.36 is: 103,573.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,715.56 : 191,427.45 = 75,053.36 : x
  2. Step 2: Convert to fraction form
    138,715.56/191,427.45 = 75,053.36/x
  3. Step 3: Cross multiply
    138,715.56x = 191,427.45 × 75,053.36
  4. Step 4: Simplify right side
    138,715.56x = 14,367,272,361.59
  5. Step 5: Solve for x
    x = 14,367,272,361.59/138,715.56
  6. Step 6: Final answer
    x = 103,573.62

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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.