Home / 124,409.34-171,636.15-76,579.65

Finding the Fourth Proportional to 124,409.34, 171,636.15 and 76,579.65

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Solution

The fourth proportional to 124,409.34, 171,636.15 and 76,579.65 is: 105,649.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,409.34 : 171,636.15 = 76,579.65 : x
  2. Step 2: Convert to fraction form
    124,409.34/171,636.15 = 76,579.65/x
  3. Step 3: Cross multiply
    124,409.34x = 171,636.15 × 76,579.65
  4. Step 4: Simplify right side
    124,409.34x = 13,143,836,294.35
  5. Step 5: Solve for x
    x = 13,143,836,294.35/124,409.34
  6. Step 6: Final answer
    x = 105,649.92

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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.