Home / 129,984,058.41-179,396,394.21-80,440,388.15

Finding the Fourth Proportional to 129,984,058.41, 179,396,394.21 and 80,440,388.15

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Solution

The fourth proportional to 129,984,058.41, 179,396,394.21 and 80,440,388.15 is: 111,019,118.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,984,058.41 : 179,396,394.21 = 80,440,388.15 : x
  2. Step 2: Convert to fraction form
    129,984,058.41/179,396,394.21 = 80,440,388.15/x
  3. Step 3: Cross multiply
    129,984,058.41x = 179,396,394.21 × 80,440,388.15
  4. Step 4: Simplify right side
    129,984,058.41x = 14,430,715,582,065,830
  5. Step 5: Solve for x
    x = 14,430,715,582,065,830/129,984,058.41
  6. Step 6: Final answer
    x = 111,019,118.49

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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.