Home / 100,072,981.50-138,029,522.87-91,839,633.63

Finding the Fourth Proportional to 100,072,981.50, 138,029,522.87 and 91,839,633.63

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Solution

The fourth proportional to 100,072,981.50, 138,029,522.87 and 91,839,633.63 is: 126,673,359.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,072,981.50 : 138,029,522.87 = 91,839,633.63 : x
  2. Step 2: Convert to fraction form
    100,072,981.50/138,029,522.87 = 91,839,633.63/x
  3. Step 3: Cross multiply
    100,072,981.50x = 138,029,522.87 × 91,839,633.63
  4. Step 4: Simplify right side
    100,072,981.50x = 12,676,580,810,045,308
  5. Step 5: Solve for x
    x = 12,676,580,810,045,308/100,072,981.50
  6. Step 6: Final answer
    x = 126,673,359.98

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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.