Home / 131,784.85-181,862.32-71,354.25

Finding the Fourth Proportional to 131,784.85, 181,862.32 and 71,354.25

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Solution

The fourth proportional to 131,784.85, 181,862.32 and 71,354.25 is: 98,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,784.85 : 181,862.32 = 71,354.25 : x
  2. Step 2: Convert to fraction form
    131,784.85/181,862.32 = 71,354.25/x
  3. Step 3: Cross multiply
    131,784.85x = 181,862.32 × 71,354.25
  4. Step 4: Simplify right side
    131,784.85x = 12,976,649,446.86
  5. Step 5: Solve for x
    x = 12,976,649,446.86/131,784.85
  6. Step 6: Final answer
    x = 98,468.45

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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.