Home / 89,143,653.40-133,715,480.10-81,207,467.80

Finding the Fourth Proportional to 89,143,653.40, 133,715,480.10 and 81,207,467.80

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Solution

The fourth proportional to 89,143,653.40, 133,715,480.10 and 81,207,467.80 is: 121,811,201.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,143,653.40 : 133,715,480.10 = 81,207,467.80 : x
  2. Step 2: Convert to fraction form
    89,143,653.40/133,715,480.10 = 81,207,467.80/x
  3. Step 3: Cross multiply
    89,143,653.40x = 133,715,480.10 × 81,207,467.80
  4. Step 4: Simplify right side
    89,143,653.40x = 10,858,695,544,582,290
  5. Step 5: Solve for x
    x = 10,858,695,544,582,290/89,143,653.40
  6. Step 6: Final answer
    x = 121,811,201.70

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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.