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Finding the Fourth Proportional to 101,292.27, 139,780.40 and 55,969.53

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Solution

The fourth proportional to 101,292.27, 139,780.40 and 55,969.53 is: 77,236.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,292.27 : 139,780.40 = 55,969.53 : x
  2. Step 2: Convert to fraction form
    101,292.27/139,780.40 = 55,969.53/x
  3. Step 3: Cross multiply
    101,292.27x = 139,780.40 × 55,969.53
  4. Step 4: Simplify right side
    101,292.27x = 7,823,443,011.36
  5. Step 5: Solve for x
    x = 7,823,443,011.36/101,292.27
  6. Step 6: Final answer
    x = 77,236.33

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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.