Home / 138,833.04-208,102.14-72,206.49

Finding the Fourth Proportional to 138,833.04, 208,102.14 and 72,206.49

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Solution

The fourth proportional to 138,833.04, 208,102.14 and 72,206.49 is: 108,233.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,833.04 : 208,102.14 = 72,206.49 : x
  2. Step 2: Convert to fraction form
    138,833.04/208,102.14 = 72,206.49/x
  3. Step 3: Cross multiply
    138,833.04x = 208,102.14 × 72,206.49
  4. Step 4: Simplify right side
    138,833.04x = 15,026,325,090.89
  5. Step 5: Solve for x
    x = 15,026,325,090.89/138,833.04
  6. Step 6: Final answer
    x = 108,233.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.