Home / 214,693,920.80-321,788,938.80-91,872,000.80

Finding the Fourth Proportional to 214,693,920.80, 321,788,938.80 and 91,872,000.80

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Solution

The fourth proportional to 214,693,920.80, 321,788,938.80 and 91,872,000.80 is: 137,700,189.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,693,920.80 : 321,788,938.80 = 91,872,000.80 : x
  2. Step 2: Convert to fraction form
    214,693,920.80/321,788,938.80 = 91,872,000.80/x
  3. Step 3: Cross multiply
    214,693,920.80x = 321,788,938.80 × 91,872,000.80
  4. Step 4: Simplify right side
    214,693,920.80x = 29,563,393,642,864,752
  5. Step 5: Solve for x
    x = 29,563,393,642,864,752/214,693,920.80
  6. Step 6: Final answer
    x = 137,700,189.80

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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.