Home / 135,154.19-186,505.26-74,721.31

Finding the Fourth Proportional to 135,154.19, 186,505.26 and 74,721.31

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Solution

The fourth proportional to 135,154.19, 186,505.26 and 74,721.31 is: 103,111.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,154.19 : 186,505.26 = 74,721.31 : x
  2. Step 2: Convert to fraction form
    135,154.19/186,505.26 = 74,721.31/x
  3. Step 3: Cross multiply
    135,154.19x = 186,505.26 × 74,721.31
  4. Step 4: Simplify right side
    135,154.19x = 13,935,916,416.56
  5. Step 5: Solve for x
    x = 13,935,916,416.56/135,154.19
  6. Step 6: Final answer
    x = 103,111.24

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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.