Home / 131,029.70-180,844.98-85,747.86

Finding the Fourth Proportional to 131,029.70, 180,844.98 and 85,747.86

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Solution

The fourth proportional to 131,029.70, 180,844.98 and 85,747.86 is: 118,347.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,029.70 : 180,844.98 = 85,747.86 : x
  2. Step 2: Convert to fraction form
    131,029.70/180,844.98 = 85,747.86/x
  3. Step 3: Cross multiply
    131,029.70x = 180,844.98 × 85,747.86
  4. Step 4: Simplify right side
    131,029.70x = 15,507,070,026.74
  5. Step 5: Solve for x
    x = 15,507,070,026.74/131,029.70
  6. Step 6: Final answer
    x = 118,347.75

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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.