Home / 143,341,982.88-197,828,729.91-81,471,621.66

Finding the Fourth Proportional to 143,341,982.88, 197,828,729.91 and 81,471,621.66

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Solution

The fourth proportional to 143,341,982.88, 197,828,729.91 and 81,471,621.66 is: 112,440,382.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,341,982.88 : 197,828,729.91 = 81,471,621.66 : x
  2. Step 2: Convert to fraction form
    143,341,982.88/197,828,729.91 = 81,471,621.66/x
  3. Step 3: Cross multiply
    143,341,982.88x = 197,828,729.91 × 81,471,621.66
  4. Step 4: Simplify right side
    143,341,982.88x = 16,117,427,436,705,844
  5. Step 5: Solve for x
    x = 16,117,427,436,705,844/143,341,982.88
  6. Step 6: Final answer
    x = 112,440,382.87

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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.