Home / 138,452,972.85-191,123,933.04-86,267,792.16

Finding the Fourth Proportional to 138,452,972.85, 191,123,933.04 and 86,267,792.16

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Solution

The fourth proportional to 138,452,972.85, 191,123,933.04 and 86,267,792.16 is: 119,086,209.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,452,972.85 : 191,123,933.04 = 86,267,792.16 : x
  2. Step 2: Convert to fraction form
    138,452,972.85/191,123,933.04 = 86,267,792.16/x
  3. Step 3: Cross multiply
    138,452,972.85x = 191,123,933.04 × 86,267,792.16
  4. Step 4: Simplify right side
    138,452,972.85x = 16,487,839,732,296,476
  5. Step 5: Solve for x
    x = 16,487,839,732,296,476/138,452,972.85
  6. Step 6: Final answer
    x = 119,086,209.51

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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.