Home / 142,073.76-196,060.44-78,410.19

Finding the Fourth Proportional to 142,073.76, 196,060.44 and 78,410.19

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Solution

The fourth proportional to 142,073.76, 196,060.44 and 78,410.19 is: 108,205.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,073.76 : 196,060.44 = 78,410.19 : x
  2. Step 2: Convert to fraction form
    142,073.76/196,060.44 = 78,410.19/x
  3. Step 3: Cross multiply
    142,073.76x = 196,060.44 × 78,410.19
  4. Step 4: Simplify right side
    142,073.76x = 15,373,136,351.88
  5. Step 5: Solve for x
    x = 15,373,136,351.88/142,073.76
  6. Step 6: Final answer
    x = 108,205.32

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Double scale
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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.