Home / 142,962.39-197,285.09-79,299.63

Finding the Fourth Proportional to 142,962.39, 197,285.09 and 79,299.63

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Solution

The fourth proportional to 142,962.39, 197,285.09 and 79,299.63 is: 109,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,962.39 : 197,285.09 = 79,299.63 : x
  2. Step 2: Convert to fraction form
    142,962.39/197,285.09 = 79,299.63/x
  3. Step 3: Cross multiply
    142,962.39x = 197,285.09 × 79,299.63
  4. Step 4: Simplify right side
    142,962.39x = 15,644,634,245.02
  5. Step 5: Solve for x
    x = 15,644,634,245.02/142,962.39
  6. Step 6: Final answer
    x = 109,431.82

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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.