Home / 142,219.85-196,264.01-78,558.17

Finding the Fourth Proportional to 142,219.85, 196,264.01 and 78,558.17

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Solution

The fourth proportional to 142,219.85, 196,264.01 and 78,558.17 is: 108,410.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,219.85 : 196,264.01 = 78,558.17 : x
  2. Step 2: Convert to fraction form
    142,219.85/196,264.01 = 78,558.17/x
  3. Step 3: Cross multiply
    142,219.85x = 196,264.01 × 78,558.17
  4. Step 4: Simplify right side
    142,219.85x = 15,418,140,677.54
  5. Step 5: Solve for x
    x = 15,418,140,677.54/142,219.85
  6. Step 6: Final answer
    x = 108,410.61

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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.