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Finding the Fourth Proportional to 171,695.40, 257,543.10 and 162,018.60

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Solution

The fourth proportional to 171,695.40, 257,543.10 and 162,018.60 is: 243,027.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,695.40 : 257,543.10 = 162,018.60 : x
  2. Step 2: Convert to fraction form
    171,695.40/257,543.10 = 162,018.60/x
  3. Step 3: Cross multiply
    171,695.40x = 257,543.10 × 162,018.60
  4. Step 4: Simplify right side
    171,695.40x = 41,726,772,501.66
  5. Step 5: Solve for x
    x = 41,726,772,501.66/171,695.40
  6. Step 6: Final answer
    x = 243,027.90

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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.