Home / 142,952.78-197,298.45-79,311.08

Finding the Fourth Proportional to 142,952.78, 197,298.45 and 79,311.08

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Solution

The fourth proportional to 142,952.78, 197,298.45 and 79,311.08 is: 109,462.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,952.78 : 197,298.45 = 79,311.08 : x
  2. Step 2: Convert to fraction form
    142,952.78/197,298.45 = 79,311.08/x
  3. Step 3: Cross multiply
    142,952.78x = 197,298.45 × 79,311.08
  4. Step 4: Simplify right side
    142,952.78x = 15,647,953,151.83
  5. Step 5: Solve for x
    x = 15,647,953,151.83/142,952.78
  6. Step 6: Final answer
    x = 109,462.39

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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.