Home / 138,740.81-191,466.14-84,274.56

Finding the Fourth Proportional to 138,740.81, 191,466.14 and 84,274.56

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Solution

The fourth proportional to 138,740.81, 191,466.14 and 84,274.56 is: 116,301.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,740.81 : 191,466.14 = 84,274.56 : x
  2. Step 2: Convert to fraction form
    138,740.81/191,466.14 = 84,274.56/x
  3. Step 3: Cross multiply
    138,740.81x = 191,466.14 × 84,274.56
  4. Step 4: Simplify right side
    138,740.81x = 16,135,724,282.03
  5. Step 5: Solve for x
    x = 16,135,724,282.03/138,740.81
  6. Step 6: Final answer
    x = 116,301.22

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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.