Home / 138,438,190.80-207,657,286.20-57,648,661.20

Finding the Fourth Proportional to 138,438,190.80, 207,657,286.20 and 57,648,661.20

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Solution

The fourth proportional to 138,438,190.80, 207,657,286.20 and 57,648,661.20 is: 86,472,991.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,438,190.80 : 207,657,286.20 = 57,648,661.20 : x
  2. Step 2: Convert to fraction form
    138,438,190.80/207,657,286.20 = 57,648,661.20/x
  3. Step 3: Cross multiply
    138,438,190.80x = 207,657,286.20 × 57,648,661.20
  4. Step 4: Simplify right side
    138,438,190.80x = 11,971,164,537,855,236
  5. Step 5: Solve for x
    x = 11,971,164,537,855,236/138,438,190.80
  6. Step 6: Final answer
    x = 86,472,991.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.