Home / 142,287.84-196,358.58-78,626.70

Finding the Fourth Proportional to 142,287.84, 196,358.58 and 78,626.70

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Solution

The fourth proportional to 142,287.84, 196,358.58 and 78,626.70 is: 108,505.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,287.84 : 196,358.58 = 78,626.70 : x
  2. Step 2: Convert to fraction form
    142,287.84/196,358.58 = 78,626.70/x
  3. Step 3: Cross multiply
    142,287.84x = 196,358.58 × 78,626.70
  4. Step 4: Simplify right side
    142,287.84x = 15,439,027,162.09
  5. Step 5: Solve for x
    x = 15,439,027,162.09/142,287.84
  6. Step 6: Final answer
    x = 108,505.60

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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.