Home / 100,669.94-138,924.79-55,352.55

Finding the Fourth Proportional to 100,669.94, 138,924.79 and 55,352.55

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Solution

The fourth proportional to 100,669.94, 138,924.79 and 55,352.55 is: 76,386.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,669.94 : 138,924.79 = 55,352.55 : x
  2. Step 2: Convert to fraction form
    100,669.94/138,924.79 = 55,352.55/x
  3. Step 3: Cross multiply
    100,669.94x = 138,924.79 × 55,352.55
  4. Step 4: Simplify right side
    100,669.94x = 7,689,841,384.71
  5. Step 5: Solve for x
    x = 7,689,841,384.71/100,669.94
  6. Step 6: Final answer
    x = 76,386.67

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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.