Home / 100,891,582.36-139,084,667.56-71,867,817.88

Finding the Fourth Proportional to 100,891,582.36, 139,084,667.56 and 71,867,817.88

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Solution

The fourth proportional to 100,891,582.36, 139,084,667.56 and 71,867,817.88 is: 99,073,791.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,891,582.36 : 139,084,667.56 = 71,867,817.88 : x
  2. Step 2: Convert to fraction form
    100,891,582.36/139,084,667.56 = 71,867,817.88/x
  3. Step 3: Cross multiply
    100,891,582.36x = 139,084,667.56 × 71,867,817.88
  4. Step 4: Simplify right side
    100,891,582.36x = 9,995,711,558,102,424
  5. Step 5: Solve for x
    x = 9,995,711,558,102,424/100,891,582.36
  6. Step 6: Final answer
    x = 99,073,791.14

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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.