Home / 131,531.02-181,514.15-71,102.86

Finding the Fourth Proportional to 131,531.02, 181,514.15 and 71,102.86

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Solution

The fourth proportional to 131,531.02, 181,514.15 and 71,102.86 is: 98,122.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,531.02 : 181,514.15 = 71,102.86 : x
  2. Step 2: Convert to fraction form
    131,531.02/181,514.15 = 71,102.86/x
  3. Step 3: Cross multiply
    131,531.02x = 181,514.15 × 71,102.86
  4. Step 4: Simplify right side
    131,531.02x = 12,906,175,195.47
  5. Step 5: Solve for x
    x = 12,906,175,195.47/131,531.02
  6. Step 6: Final answer
    x = 98,122.67

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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.