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Finding the Fourth Proportional to 170,671.86, 256,034.52 and 139,005.72

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Solution

The fourth proportional to 170,671.86, 256,034.52 and 139,005.72 is: 208,530.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,671.86 : 256,034.52 = 139,005.72 : x
  2. Step 2: Convert to fraction form
    170,671.86/256,034.52 = 139,005.72/x
  3. Step 3: Cross multiply
    170,671.86x = 256,034.52 × 139,005.72
  4. Step 4: Simplify right side
    170,671.86x = 35,590,262,797.45
  5. Step 5: Solve for x
    x = 35,590,262,797.45/170,671.86
  6. Step 6: Final answer
    x = 208,530.35

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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.