Home / 131,147.55-180,981.63-73,782.54

Finding the Fourth Proportional to 131,147.55, 180,981.63 and 73,782.54

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Solution

The fourth proportional to 131,147.55, 180,981.63 and 73,782.54 is: 101,818.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,147.55 : 180,981.63 = 73,782.54 : x
  2. Step 2: Convert to fraction form
    131,147.55/180,981.63 = 73,782.54/x
  3. Step 3: Cross multiply
    131,147.55x = 180,981.63 × 73,782.54
  4. Step 4: Simplify right side
    131,147.55x = 13,353,284,354.74
  5. Step 5: Solve for x
    x = 13,353,284,354.74/131,147.55
  6. Step 6: Final answer
    x = 101,818.79

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1.5x scale

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.