Home / 105,185.33-145,161.19-64,336.65

Finding the Fourth Proportional to 105,185.33, 145,161.19 and 64,336.65

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Solution

The fourth proportional to 105,185.33, 145,161.19 and 64,336.65 is: 88,787.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,185.33 : 145,161.19 = 64,336.65 : x
  2. Step 2: Convert to fraction form
    105,185.33/145,161.19 = 64,336.65/x
  3. Step 3: Cross multiply
    105,185.33x = 145,161.19 × 64,336.65
  4. Step 4: Simplify right side
    105,185.33x = 9,339,184,513.77
  5. Step 5: Solve for x
    x = 9,339,184,513.77/105,185.33
  6. Step 6: Final answer
    x = 88,787.90

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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.