Home / 171,431.60-257,320.20-82,756.40

Finding the Fourth Proportional to 171,431.60, 257,320.20 and 82,756.40

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Solution

The fourth proportional to 171,431.60, 257,320.20 and 82,756.40 is: 124,218.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,431.60 : 257,320.20 = 82,756.40 : x
  2. Step 2: Convert to fraction form
    171,431.60/257,320.20 = 82,756.40/x
  3. Step 3: Cross multiply
    171,431.60x = 257,320.20 × 82,756.40
  4. Step 4: Simplify right side
    171,431.60x = 21,294,893,399.28
  5. Step 5: Solve for x
    x = 21,294,893,399.28/171,431.60
  6. Step 6: Final answer
    x = 124,218.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.