Home / 138,008,954,331.20-207,013,431,496.80-90,898,622,868.80

Finding the Fourth Proportional to 138,008,954,331.20, 207,013,431,496.80 and 90,898,622,868.80

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Solution

The fourth proportional to 138,008,954,331.20, 207,013,431,496.80 and 90,898,622,868.80 is: 136,347,934,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,008,954,331.20 : 207,013,431,496.80 = 90,898,622,868.80 : x
  2. Step 2: Convert to fraction form
    138,008,954,331.20/207,013,431,496.80 = 90,898,622,868.80/x
  3. Step 3: Cross multiply
    138,008,954,331.20x = 207,013,431,496.80 × 90,898,622,868.80
  4. Step 4: Simplify right side
    138,008,954,331.20x = 18,817,235,838,403,786,833,920
  5. Step 5: Solve for x
    x = 18,817,235,838,403,786,833,920/138,008,954,331.20
  6. Step 6: Final answer
    x = 136,347,934,303.20

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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.