Home / 100,072,630.98-138,029,038.20-91,839,280.68

Finding the Fourth Proportional to 100,072,630.98, 138,029,038.20 and 91,839,280.68

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Solution

The fourth proportional to 100,072,630.98, 138,029,038.20 and 91,839,280.68 is: 126,672,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,072,630.98 : 138,029,038.20 = 91,839,280.68 : x
  2. Step 2: Convert to fraction form
    100,072,630.98/138,029,038.20 = 91,839,280.68/x
  3. Step 3: Cross multiply
    100,072,630.98x = 138,029,038.20 × 91,839,280.68
  4. Step 4: Simplify right side
    100,072,630.98x = 12,676,487,581,240,242
  5. Step 5: Solve for x
    x = 12,676,487,581,240,242/100,072,630.98
  6. Step 6: Final answer
    x = 126,672,872.06

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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.