Home / 121,162,605.70-181,743,908.55-72,789,664.90

Finding the Fourth Proportional to 121,162,605.70, 181,743,908.55 and 72,789,664.90

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Solution

The fourth proportional to 121,162,605.70, 181,743,908.55 and 72,789,664.90 is: 109,184,497.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,162,605.70 : 181,743,908.55 = 72,789,664.90 : x
  2. Step 2: Convert to fraction form
    121,162,605.70/181,743,908.55 = 72,789,664.90/x
  3. Step 3: Cross multiply
    121,162,605.70x = 181,743,908.55 × 72,789,664.90
  4. Step 4: Simplify right side
    121,162,605.70x = 13,229,078,200,970,746
  5. Step 5: Solve for x
    x = 13,229,078,200,970,746/121,162,605.70
  6. Step 6: Final answer
    x = 109,184,497.35

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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.