Home / 104,985.11-144,881.71-57,238.78

Finding the Fourth Proportional to 104,985.11, 144,881.71 and 57,238.78

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Solution

The fourth proportional to 104,985.11, 144,881.71 and 57,238.78 is: 78,990.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,985.11 : 144,881.71 = 57,238.78 : x
  2. Step 2: Convert to fraction form
    104,985.11/144,881.71 = 57,238.78/x
  3. Step 3: Cross multiply
    104,985.11x = 144,881.71 × 57,238.78
  4. Step 4: Simplify right side
    104,985.11x = 8,292,852,324.71
  5. Step 5: Solve for x
    x = 8,292,852,324.71/104,985.11
  6. Step 6: Final answer
    x = 78,990.75

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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.