Home / 142,037.82-196,013.12-77,511.60

Finding the Fourth Proportional to 142,037.82, 196,013.12 and 77,511.60

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Solution

The fourth proportional to 142,037.82, 196,013.12 and 77,511.60 is: 106,966.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,037.82 : 196,013.12 = 77,511.60 : x
  2. Step 2: Convert to fraction form
    142,037.82/196,013.12 = 77,511.60/x
  3. Step 3: Cross multiply
    142,037.82x = 196,013.12 × 77,511.60
  4. Step 4: Simplify right side
    142,037.82x = 15,193,290,164.63
  5. Step 5: Solve for x
    x = 15,193,290,164.63/142,037.82
  6. Step 6: Final answer
    x = 106,966.51

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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.