Home / 104,878.09-144,731.87-57,131.38

Finding the Fourth Proportional to 104,878.09, 144,731.87 and 57,131.38

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Solution

The fourth proportional to 104,878.09, 144,731.87 and 57,131.38 is: 78,841.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,878.09 : 144,731.87 = 57,131.38 : x
  2. Step 2: Convert to fraction form
    104,878.09/144,731.87 = 57,131.38/x
  3. Step 3: Cross multiply
    104,878.09x = 144,731.87 × 57,131.38
  4. Step 4: Simplify right side
    104,878.09x = 8,268,731,463.08
  5. Step 5: Solve for x
    x = 8,268,731,463.08/104,878.09
  6. Step 6: Final answer
    x = 78,841.36

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1.5x scale

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.