Home / 134,942.31-186,294.20-81,239.31

Finding the Fourth Proportional to 134,942.31, 186,294.20 and 81,239.31

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Solution

The fourth proportional to 134,942.31, 186,294.20 and 81,239.31 is: 112,154.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,942.31 : 186,294.20 = 81,239.31 : x
  2. Step 2: Convert to fraction form
    134,942.31/186,294.20 = 81,239.31/x
  3. Step 3: Cross multiply
    134,942.31x = 186,294.20 × 81,239.31
  4. Step 4: Simplify right side
    134,942.31x = 15,134,411,858.81
  5. Step 5: Solve for x
    x = 15,134,411,858.81/134,942.31
  6. Step 6: Final answer
    x = 112,154.68

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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.