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Finding the Fourth Proportional to 171,070.10, 256,605.15 and 139,966.10

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Solution

The fourth proportional to 171,070.10, 256,605.15 and 139,966.10 is: 209,949.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,070.10 : 256,605.15 = 139,966.10 : x
  2. Step 2: Convert to fraction form
    171,070.10/256,605.15 = 139,966.10/x
  3. Step 3: Cross multiply
    171,070.10x = 256,605.15 × 139,966.10
  4. Step 4: Simplify right side
    171,070.10x = 35,916,022,085.42
  5. Step 5: Solve for x
    x = 35,916,022,085.42/171,070.10
  6. Step 6: Final answer
    x = 209,949.15

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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.