Home / 171,921.28-257,888.64-53,603.20

Finding the Fourth Proportional to 171,921.28, 257,888.64 and 53,603.20

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Solution

The fourth proportional to 171,921.28, 257,888.64 and 53,603.20 is: 80,406.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,921.28 : 257,888.64 = 53,603.20 : x
  2. Step 2: Convert to fraction form
    171,921.28/257,888.64 = 53,603.20/x
  3. Step 3: Cross multiply
    171,921.28x = 257,888.64 × 53,603.20
  4. Step 4: Simplify right side
    171,921.28x = 13,823,656,347.65
  5. Step 5: Solve for x
    x = 13,823,656,347.65/171,921.28
  6. Step 6: Final answer
    x = 80,406.90

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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.