Home / 131,022.78-180,811.35-71,406.78

Finding the Fourth Proportional to 131,022.78, 180,811.35 and 71,406.78

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Solution

The fourth proportional to 131,022.78, 180,811.35 and 71,406.78 is: 98,541.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,022.78 : 180,811.35 = 71,406.78 : x
  2. Step 2: Convert to fraction form
    131,022.78/180,811.35 = 71,406.78/x
  3. Step 3: Cross multiply
    131,022.78x = 180,811.35 × 71,406.78
  4. Step 4: Simplify right side
    131,022.78x = 12,911,156,290.95
  5. Step 5: Solve for x
    x = 12,911,156,290.95/131,022.78
  6. Step 6: Final answer
    x = 98,541.31

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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.