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Finding the Fourth Proportional to 171,530.91, 257,223.46 and 70,259.15

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Solution

The fourth proportional to 171,530.91, 257,223.46 and 70,259.15 is: 105,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,530.91 : 257,223.46 = 70,259.15 : x
  2. Step 2: Convert to fraction form
    171,530.91/257,223.46 = 70,259.15/x
  3. Step 3: Cross multiply
    171,530.91x = 257,223.46 × 70,259.15
  4. Step 4: Simplify right side
    171,530.91x = 18,072,301,659.66
  5. Step 5: Solve for x
    x = 18,072,301,659.66/171,530.91
  6. Step 6: Final answer
    x = 105,358.86

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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.