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Finding the Fourth Proportional to 101,000.17, 139,380.19 and 55,678.92

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Solution

The fourth proportional to 101,000.17, 139,380.19 and 55,678.92 is: 76,836.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,000.17 : 139,380.19 = 55,678.92 : x
  2. Step 2: Convert to fraction form
    101,000.17/139,380.19 = 55,678.92/x
  3. Step 3: Cross multiply
    101,000.17x = 139,380.19 × 55,678.92
  4. Step 4: Simplify right side
    101,000.17x = 7,760,538,448.59
  5. Step 5: Solve for x
    x = 7,760,538,448.59/101,000.17
  6. Step 6: Final answer
    x = 76,836.89

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1.5x scale

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.