Home / 138,619.59-191,295.23-74,957.38

Finding the Fourth Proportional to 138,619.59, 191,295.23 and 74,957.38

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Solution

The fourth proportional to 138,619.59, 191,295.23 and 74,957.38 is: 103,441.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,619.59 : 191,295.23 = 74,957.38 : x
  2. Step 2: Convert to fraction form
    138,619.59/191,295.23 = 74,957.38/x
  3. Step 3: Cross multiply
    138,619.59x = 191,295.23 × 74,957.38
  4. Step 4: Simplify right side
    138,619.59x = 14,338,988,872.51
  5. Step 5: Solve for x
    x = 14,338,988,872.51/138,619.59
  6. Step 6: Final answer
    x = 103,441.29

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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.