Home / 131,411.77-181,354.95-80,408.50

Finding the Fourth Proportional to 131,411.77, 181,354.95 and 80,408.50

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Solution

The fourth proportional to 131,411.77, 181,354.95 and 80,408.50 is: 110,967.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,411.77 : 181,354.95 = 80,408.50 : x
  2. Step 2: Convert to fraction form
    131,411.77/181,354.95 = 80,408.50/x
  3. Step 3: Cross multiply
    131,411.77x = 181,354.95 × 80,408.50
  4. Step 4: Simplify right side
    131,411.77x = 14,582,479,497.08
  5. Step 5: Solve for x
    x = 14,582,479,497.08/131,411.77
  6. Step 6: Final answer
    x = 110,967.83

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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.