Home / 131,126.86-180,945.75-77,409.10

Finding the Fourth Proportional to 131,126.86, 180,945.75 and 77,409.10

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Solution

The fourth proportional to 131,126.86, 180,945.75 and 77,409.10 is: 106,819.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,126.86 : 180,945.75 = 77,409.10 : x
  2. Step 2: Convert to fraction form
    131,126.86/180,945.75 = 77,409.10/x
  3. Step 3: Cross multiply
    131,126.86x = 180,945.75 × 77,409.10
  4. Step 4: Simplify right side
    131,126.86x = 14,006,847,656.33
  5. Step 5: Solve for x
    x = 14,006,847,656.33/131,126.86
  6. Step 6: Final answer
    x = 106,819.06

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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.