Home / 134,772.38-185,971.02-78,172.82

Finding the Fourth Proportional to 134,772.38, 185,971.02 and 78,172.82

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Solution

The fourth proportional to 134,772.38, 185,971.02 and 78,172.82 is: 107,869.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,772.38 : 185,971.02 = 78,172.82 : x
  2. Step 2: Convert to fraction form
    134,772.38/185,971.02 = 78,172.82/x
  3. Step 3: Cross multiply
    134,772.38x = 185,971.02 × 78,172.82
  4. Step 4: Simplify right side
    134,772.38x = 14,537,879,071.68
  5. Step 5: Solve for x
    x = 14,537,879,071.68/134,772.38
  6. Step 6: Final answer
    x = 107,869.87

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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.