Home / 100,356,389.90-138,540,478.18-67,304,548.68

Finding the Fourth Proportional to 100,356,389.90, 138,540,478.18 and 67,304,548.68

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Solution

The fourth proportional to 100,356,389.90, 138,540,478.18 and 67,304,548.68 is: 92,912,911.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,356,389.90 : 138,540,478.18 = 67,304,548.68 : x
  2. Step 2: Convert to fraction form
    100,356,389.90/138,540,478.18 = 67,304,548.68/x
  3. Step 3: Cross multiply
    100,356,389.90x = 138,540,478.18 × 67,304,548.68
  4. Step 4: Simplify right side
    100,356,389.90x = 9,324,404,357,816,290
  5. Step 5: Solve for x
    x = 9,324,404,357,816,290/100,356,389.90
  6. Step 6: Final answer
    x = 92,912,911.35

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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.