Home / 136,029.76-187,699.62-78,647.74

Finding the Fourth Proportional to 136,029.76, 187,699.62 and 78,647.74

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Solution

The fourth proportional to 136,029.76, 187,699.62 and 78,647.74 is: 108,521.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,029.76 : 187,699.62 = 78,647.74 : x
  2. Step 2: Convert to fraction form
    136,029.76/187,699.62 = 78,647.74/x
  3. Step 3: Cross multiply
    136,029.76x = 187,699.62 × 78,647.74
  4. Step 4: Simplify right side
    136,029.76x = 14,762,150,911.86
  5. Step 5: Solve for x
    x = 14,762,150,911.86/136,029.76
  6. Step 6: Final answer
    x = 108,521.48

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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.