Home / 136,081.86-187,816.22-87,670.18

Finding the Fourth Proportional to 136,081.86, 187,816.22 and 87,670.18

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Solution

The fourth proportional to 136,081.86, 187,816.22 and 87,670.18 is: 120,999.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,081.86 : 187,816.22 = 87,670.18 : x
  2. Step 2: Convert to fraction form
    136,081.86/187,816.22 = 87,670.18/x
  3. Step 3: Cross multiply
    136,081.86x = 187,816.22 × 87,670.18
  4. Step 4: Simplify right side
    136,081.86x = 16,465,881,814.32
  5. Step 5: Solve for x
    x = 16,465,881,814.32/136,081.86
  6. Step 6: Final answer
    x = 120,999.83

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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.