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Finding the Fourth Proportional to 101,296.28, 139,781.64 and 55,973.76

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Solution

The fourth proportional to 101,296.28, 139,781.64 and 55,973.76 is: 77,239.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,296.28 : 139,781.64 = 55,973.76 : x
  2. Step 2: Convert to fraction form
    101,296.28/139,781.64 = 55,973.76/x
  3. Step 3: Cross multiply
    101,296.28x = 139,781.64 × 55,973.76
  4. Step 4: Simplify right side
    101,296.28x = 7,824,103,969.77
  5. Step 5: Solve for x
    x = 7,824,103,969.77/101,296.28
  6. Step 6: Final answer
    x = 77,239.80

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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.