Home / 138,513.04-191,250.36-84,871.32

Finding the Fourth Proportional to 138,513.04, 191,250.36 and 84,871.32

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Solution

The fourth proportional to 138,513.04, 191,250.36 and 84,871.32 is: 117,185.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,513.04 : 191,250.36 = 84,871.32 : x
  2. Step 2: Convert to fraction form
    138,513.04/191,250.36 = 84,871.32/x
  3. Step 3: Cross multiply
    138,513.04x = 191,250.36 × 84,871.32
  4. Step 4: Simplify right side
    138,513.04x = 16,231,670,503.68
  5. Step 5: Solve for x
    x = 16,231,670,503.68/138,513.04
  6. Step 6: Final answer
    x = 117,185.14

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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.