Home / 89,642,971.70-134,464,457.55-81,990,221.30

Finding the Fourth Proportional to 89,642,971.70, 134,464,457.55 and 81,990,221.30

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Solution

The fourth proportional to 89,642,971.70, 134,464,457.55 and 81,990,221.30 is: 122,985,331.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,642,971.70 : 134,464,457.55 = 81,990,221.30 : x
  2. Step 2: Convert to fraction form
    89,642,971.70/134,464,457.55 = 81,990,221.30/x
  3. Step 3: Cross multiply
    89,642,971.70x = 134,464,457.55 × 81,990,221.30
  4. Step 4: Simplify right side
    89,642,971.70x = 11,024,770,631,508,956
  5. Step 5: Solve for x
    x = 11,024,770,631,508,956/89,642,971.70
  6. Step 6: Final answer
    x = 122,985,331.95

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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.