Home / 131,670.43-181,703.90-71,239.75

Finding the Fourth Proportional to 131,670.43, 181,703.90 and 71,239.75

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Solution

The fourth proportional to 131,670.43, 181,703.90 and 71,239.75 is: 98,310.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,670.43 : 181,703.90 = 71,239.75 : x
  2. Step 2: Convert to fraction form
    131,670.43/181,703.90 = 71,239.75/x
  3. Step 3: Cross multiply
    131,670.43x = 181,703.90 × 71,239.75
  4. Step 4: Simplify right side
    131,670.43x = 12,944,539,501.51
  5. Step 5: Solve for x
    x = 12,944,539,501.51/131,670.43
  6. Step 6: Final answer
    x = 98,310.15

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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.