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Finding the Fourth Proportional to 171,970.86, 257,820.62 and 108,657.55

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Solution

The fourth proportional to 171,970.86, 257,820.62 and 108,657.55 is: 162,900.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,970.86 : 257,820.62 = 108,657.55 : x
  2. Step 2: Convert to fraction form
    171,970.86/257,820.62 = 108,657.55/x
  3. Step 3: Cross multiply
    171,970.86x = 257,820.62 × 108,657.55
  4. Step 4: Simplify right side
    171,970.86x = 28,014,156,535.77
  5. Step 5: Solve for x
    x = 28,014,156,535.77/171,970.86
  6. Step 6: Final answer
    x = 162,900.60

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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.