Home / 103,639.52-155,459.26-68,570.96

Finding the Fourth Proportional to 103,639.52, 155,459.26 and 68,570.96

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Solution

The fourth proportional to 103,639.52, 155,459.26 and 68,570.96 is: 102,856.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,639.52 : 155,459.26 = 68,570.96 : x
  2. Step 2: Convert to fraction form
    103,639.52/155,459.26 = 68,570.96/x
  3. Step 3: Cross multiply
    103,639.52x = 155,459.26 × 68,570.96
  4. Step 4: Simplify right side
    103,639.52x = 10,659,990,699.09
  5. Step 5: Solve for x
    x = 10,659,990,699.09/103,639.52
  6. Step 6: Final answer
    x = 102,856.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.