Home / 138,450,685.21-191,120,777.22-86,265,504.07

Finding the Fourth Proportional to 138,450,685.21, 191,120,777.22 and 86,265,504.07

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Solution

The fourth proportional to 138,450,685.21, 191,120,777.22 and 86,265,504.07 is: 119,083,052.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,450,685.21 : 191,120,777.22 = 86,265,504.07 : x
  2. Step 2: Convert to fraction form
    138,450,685.21/191,120,777.22 = 86,265,504.07/x
  3. Step 3: Cross multiply
    138,450,685.21x = 191,120,777.22 × 86,265,504.07
  4. Step 4: Simplify right side
    138,450,685.21x = 16,487,130,185,133,472
  5. Step 5: Solve for x
    x = 16,487,130,185,133,472/138,450,685.21
  6. Step 6: Final answer
    x = 119,083,052.28

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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.