Home / 104,875.11-144,727.62-57,128.45

Finding the Fourth Proportional to 104,875.11, 144,727.62 and 57,128.45

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Solution

The fourth proportional to 104,875.11, 144,727.62 and 57,128.45 is: 78,837.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,875.11 : 144,727.62 = 57,128.45 : x
  2. Step 2: Convert to fraction form
    104,875.11/144,727.62 = 57,128.45/x
  3. Step 3: Cross multiply
    104,875.11x = 144,727.62 × 57,128.45
  4. Step 4: Simplify right side
    104,875.11x = 8,268,063,879.15
  5. Step 5: Solve for x
    x = 8,268,063,879.15/104,875.11
  6. Step 6: Final answer
    x = 78,837.24

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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.