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Finding the Fourth Proportional to 115,612.68, 159,542.15 and 64,625.51

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Solution

The fourth proportional to 115,612.68, 159,542.15 and 64,625.51 is: 89,181.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,612.68 : 159,542.15 = 64,625.51 : x
  2. Step 2: Convert to fraction form
    115,612.68/159,542.15 = 64,625.51/x
  3. Step 3: Cross multiply
    115,612.68x = 159,542.15 × 64,625.51
  4. Step 4: Simplify right side
    115,612.68x = 10,310,491,689.41
  5. Step 5: Solve for x
    x = 10,310,491,689.41/115,612.68
  6. Step 6: Final answer
    x = 89,181.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.