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Finding the Fourth Proportional to 171,024.60, 256,536.90 and 139,920.60

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Solution

The fourth proportional to 171,024.60, 256,536.90 and 139,920.60 is: 209,880.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,024.60 : 256,536.90 = 139,920.60 : x
  2. Step 2: Convert to fraction form
    171,024.60/256,536.90 = 139,920.60/x
  3. Step 3: Cross multiply
    171,024.60x = 256,536.90 × 139,920.60
  4. Step 4: Simplify right side
    171,024.60x = 35,894,796,970.14
  5. Step 5: Solve for x
    x = 35,894,796,970.14/171,024.60
  6. Step 6: Final answer
    x = 209,880.90

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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.