Home / 171,612.20-257,155.14-78,008.60

Finding the Fourth Proportional to 171,612.20, 257,155.14 and 78,008.60

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Solution

The fourth proportional to 171,612.20, 257,155.14 and 78,008.60 is: 116,893.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,612.20 : 257,155.14 = 78,008.60 : x
  2. Step 2: Convert to fraction form
    171,612.20/257,155.14 = 78,008.60/x
  3. Step 3: Cross multiply
    171,612.20x = 257,155.14 × 78,008.60
  4. Step 4: Simplify right side
    171,612.20x = 20,060,312,454.20
  5. Step 5: Solve for x
    x = 20,060,312,454.20/171,612.20
  6. Step 6: Final answer
    x = 116,893.28

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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.