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Finding the Fourth Proportional to 101,255.79, 139,730.28 and 55,932.80

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Solution

The fourth proportional to 101,255.79, 139,730.28 and 55,932.80 is: 77,185.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,255.79 : 139,730.28 = 55,932.80 : x
  2. Step 2: Convert to fraction form
    101,255.79/139,730.28 = 55,932.80/x
  3. Step 3: Cross multiply
    101,255.79x = 139,730.28 × 55,932.80
  4. Step 4: Simplify right side
    101,255.79x = 7,815,506,154.51
  5. Step 5: Solve for x
    x = 7,815,506,154.51/101,255.79
  6. Step 6: Final answer
    x = 77,185.77

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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.