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Finding the Fourth Proportional to 101,097.68, 139,513.47 and 55,777.57

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Solution

The fourth proportional to 101,097.68, 139,513.47 and 55,777.57 is: 76,972.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,097.68 : 139,513.47 = 55,777.57 : x
  2. Step 2: Convert to fraction form
    101,097.68/139,513.47 = 55,777.57/x
  3. Step 3: Cross multiply
    101,097.68x = 139,513.47 × 55,777.57
  4. Step 4: Simplify right side
    101,097.68x = 7,781,721,780.92
  5. Step 5: Solve for x
    x = 7,781,721,780.92/101,097.68
  6. Step 6: Final answer
    x = 76,972.31

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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.