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Finding the Fourth Proportional to 207,664.48, 286,701.48 and 136,169.20

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Solution

The fourth proportional to 207,664.48, 286,701.48 and 136,169.20 is: 187,995.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,664.48 : 286,701.48 = 136,169.20 : x
  2. Step 2: Convert to fraction form
    207,664.48/286,701.48 = 136,169.20/x
  3. Step 3: Cross multiply
    207,664.48x = 286,701.48 × 136,169.20
  4. Step 4: Simplify right side
    207,664.48x = 39,039,911,170.42
  5. Step 5: Solve for x
    x = 39,039,911,170.42/207,664.48
  6. Step 6: Final answer
    x = 187,995.13

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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.