Home / 131,117.20-180,895.08-77,375.32

Finding the Fourth Proportional to 131,117.20, 180,895.08 and 77,375.32

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Solution

The fourth proportional to 131,117.20, 180,895.08 and 77,375.32 is: 106,750.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,117.20 : 180,895.08 = 77,375.32 : x
  2. Step 2: Convert to fraction form
    131,117.20/180,895.08 = 77,375.32/x
  3. Step 3: Cross multiply
    131,117.20x = 180,895.08 × 77,375.32
  4. Step 4: Simplify right side
    131,117.20x = 13,996,814,701.43
  5. Step 5: Solve for x
    x = 13,996,814,701.43/131,117.20
  6. Step 6: Final answer
    x = 106,750.41

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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.