Home / 103,612.92-142,366.19-82,355.28

Finding the Fourth Proportional to 103,612.92, 142,366.19 and 82,355.28

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Solution

The fourth proportional to 103,612.92, 142,366.19 and 82,355.28 is: 113,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,612.92 : 142,366.19 = 82,355.28 : x
  2. Step 2: Convert to fraction form
    103,612.92/142,366.19 = 82,355.28/x
  3. Step 3: Cross multiply
    103,612.92x = 142,366.19 × 82,355.28
  4. Step 4: Simplify right side
    103,612.92x = 11,724,607,439.98
  5. Step 5: Solve for x
    x = 11,724,607,439.98/103,612.92
  6. Step 6: Final answer
    x = 113,157.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.