Home / 100,975.46-139,345.68-55,035.03

Finding the Fourth Proportional to 100,975.46, 139,345.68 and 55,035.03

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Solution

The fourth proportional to 100,975.46, 139,345.68 and 55,035.03 is: 75,948.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,975.46 : 139,345.68 = 55,035.03 : x
  2. Step 2: Convert to fraction form
    100,975.46/139,345.68 = 55,035.03/x
  3. Step 3: Cross multiply
    100,975.46x = 139,345.68 × 55,035.03
  4. Step 4: Simplify right side
    100,975.46x = 7,668,893,679.17
  5. Step 5: Solve for x
    x = 7,668,893,679.17/100,975.46
  6. Step 6: Final answer
    x = 75,948.09

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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.