Home / 131,256.12-181,070.40-85,914.12

Finding the Fourth Proportional to 131,256.12, 181,070.40 and 85,914.12

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Solution

The fourth proportional to 131,256.12, 181,070.40 and 85,914.12 is: 118,520.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,256.12 : 181,070.40 = 85,914.12 : x
  2. Step 2: Convert to fraction form
    131,256.12/181,070.40 = 85,914.12/x
  3. Step 3: Cross multiply
    131,256.12x = 181,070.40 × 85,914.12
  4. Step 4: Simplify right side
    131,256.12x = 15,556,504,074.05
  5. Step 5: Solve for x
    x = 15,556,504,074.05/131,256.12
  6. Step 6: Final answer
    x = 118,520.22

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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.