Home / 105,083.43-145,015.11-57,336.96

Finding the Fourth Proportional to 105,083.43, 145,015.11 and 57,336.96

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Solution

The fourth proportional to 105,083.43, 145,015.11 and 57,336.96 is: 79,124.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,083.43 : 145,015.11 = 57,336.96 : x
  2. Step 2: Convert to fraction form
    105,083.43/145,015.11 = 57,336.96/x
  3. Step 3: Cross multiply
    105,083.43x = 145,015.11 × 57,336.96
  4. Step 4: Simplify right side
    105,083.43x = 8,314,725,561.47
  5. Step 5: Solve for x
    x = 8,314,725,561.47/105,083.43
  6. Step 6: Final answer
    x = 79,124.99

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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.