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Finding the Fourth Proportional to 101,273.81, 139,756.21 and 55,953.71

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Solution

The fourth proportional to 101,273.81, 139,756.21 and 55,953.71 is: 77,215.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,273.81 : 139,756.21 = 55,953.71 : x
  2. Step 2: Convert to fraction form
    101,273.81/139,756.21 = 55,953.71/x
  3. Step 3: Cross multiply
    101,273.81x = 139,756.21 × 55,953.71
  4. Step 4: Simplify right side
    101,273.81x = 7,819,877,606.37
  5. Step 5: Solve for x
    x = 7,819,877,606.37/101,273.81
  6. Step 6: Final answer
    x = 77,215.20

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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.