Home / 131,255.12-181,069.03-85,913.12

Finding the Fourth Proportional to 131,255.12, 181,069.03 and 85,913.12

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Solution

The fourth proportional to 131,255.12, 181,069.03 and 85,913.12 is: 118,518.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,255.12 : 181,069.03 = 85,913.12 : x
  2. Step 2: Convert to fraction form
    131,255.12/181,069.03 = 85,913.12/x
  3. Step 3: Cross multiply
    131,255.12x = 181,069.03 × 85,913.12
  4. Step 4: Simplify right side
    131,255.12x = 15,556,205,302.67
  5. Step 5: Solve for x
    x = 15,556,205,302.67/131,255.12
  6. Step 6: Final answer
    x = 118,518.85

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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.