Home / 142,037.30-196,006.77-78,375.14

Finding the Fourth Proportional to 142,037.30, 196,006.77 and 78,375.14

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Solution

The fourth proportional to 142,037.30, 196,006.77 and 78,375.14 is: 108,155.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,037.30 : 196,006.77 = 78,375.14 : x
  2. Step 2: Convert to fraction form
    142,037.30/196,006.77 = 78,375.14/x
  3. Step 3: Cross multiply
    142,037.30x = 196,006.77 × 78,375.14
  4. Step 4: Simplify right side
    142,037.30x = 15,362,058,039.70
  5. Step 5: Solve for x
    x = 15,362,058,039.70/142,037.30
  6. Step 6: Final answer
    x = 108,155.10

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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.