Home / 131,981.90-182,054.36-78,230.93

Finding the Fourth Proportional to 131,981.90, 182,054.36 and 78,230.93

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Solution

The fourth proportional to 131,981.90, 182,054.36 and 78,230.93 is: 107,910.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,981.90 : 182,054.36 = 78,230.93 : x
  2. Step 2: Convert to fraction form
    131,981.90/182,054.36 = 78,230.93/x
  3. Step 3: Cross multiply
    131,981.90x = 182,054.36 × 78,230.93
  4. Step 4: Simplify right side
    131,981.90x = 14,242,280,591.93
  5. Step 5: Solve for x
    x = 14,242,280,591.93/131,981.90
  6. Step 6: Final answer
    x = 107,910.87

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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.