Home / 142,346.97-196,439.99-78,685.83

Finding the Fourth Proportional to 142,346.97, 196,439.99 and 78,685.83

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Solution

The fourth proportional to 142,346.97, 196,439.99 and 78,685.83 is: 108,587.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,346.97 : 196,439.99 = 78,685.83 : x
  2. Step 2: Convert to fraction form
    142,346.97/196,439.99 = 78,685.83/x
  3. Step 3: Cross multiply
    142,346.97x = 196,439.99 × 78,685.83
  4. Step 4: Simplify right side
    142,346.97x = 15,457,043,264.91
  5. Step 5: Solve for x
    x = 15,457,043,264.91/142,346.97
  6. Step 6: Final answer
    x = 108,587.09

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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.