Home / 138,101.04-207,178.28-53,857.80

Finding the Fourth Proportional to 138,101.04, 207,178.28 and 53,857.80

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Solution

The fourth proportional to 138,101.04, 207,178.28 and 53,857.80 is: 80,797.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,101.04 : 207,178.28 = 53,857.80 : x
  2. Step 2: Convert to fraction form
    138,101.04/207,178.28 = 53,857.80/x
  3. Step 3: Cross multiply
    138,101.04x = 207,178.28 × 53,857.80
  4. Step 4: Simplify right side
    138,101.04x = 11,158,166,368.58
  5. Step 5: Solve for x
    x = 11,158,166,368.58/138,101.04
  6. Step 6: Final answer
    x = 80,797.12

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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.