Home / 119,485.15-164,805.52-78,636.26

Finding the Fourth Proportional to 119,485.15, 164,805.52 and 78,636.26

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Solution

The fourth proportional to 119,485.15, 164,805.52 and 78,636.26 is: 108,462.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,485.15 : 164,805.52 = 78,636.26 : x
  2. Step 2: Convert to fraction form
    119,485.15/164,805.52 = 78,636.26/x
  3. Step 3: Cross multiply
    119,485.15x = 164,805.52 × 78,636.26
  4. Step 4: Simplify right side
    119,485.15x = 12,959,690,230.46
  5. Step 5: Solve for x
    x = 12,959,690,230.46/119,485.15
  6. Step 6: Final answer
    x = 108,462.77

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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.