Home / 134,696.76-185,890.86-78,127.80

Finding the Fourth Proportional to 134,696.76, 185,890.86 and 78,127.80

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Solution

The fourth proportional to 134,696.76, 185,890.86 and 78,127.80 is: 107,821.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,696.76 : 185,890.86 = 78,127.80 : x
  2. Step 2: Convert to fraction form
    134,696.76/185,890.86 = 78,127.80/x
  3. Step 3: Cross multiply
    134,696.76x = 185,890.86 × 78,127.80
  4. Step 4: Simplify right side
    134,696.76x = 14,523,243,931.91
  5. Step 5: Solve for x
    x = 14,523,243,931.91/134,696.76
  6. Step 6: Final answer
    x = 107,821.78

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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.