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Finding the Fourth Proportional to 207,039.61, 285,725.91 and 115,168.60

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Solution

The fourth proportional to 207,039.61, 285,725.91 and 115,168.60 is: 158,938.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,039.61 : 285,725.91 = 115,168.60 : x
  2. Step 2: Convert to fraction form
    207,039.61/285,725.91 = 115,168.60/x
  3. Step 3: Cross multiply
    207,039.61x = 285,725.91 × 115,168.60
  4. Step 4: Simplify right side
    207,039.61x = 32,906,653,038.43
  5. Step 5: Solve for x
    x = 32,906,653,038.43/207,039.61
  6. Step 6: Final answer
    x = 158,938.92

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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.