Home / 207,665.48-286,702.86-136,170.20

Finding the Fourth Proportional to 207,665.48, 286,702.86 and 136,170.20

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Solution

The fourth proportional to 207,665.48, 286,702.86 and 136,170.20 is: 187,996.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,665.48 : 286,702.86 = 136,170.20 : x
  2. Step 2: Convert to fraction form
    207,665.48/286,702.86 = 136,170.20/x
  3. Step 3: Cross multiply
    207,665.48x = 286,702.86 × 136,170.20
  4. Step 4: Simplify right side
    207,665.48x = 39,040,385,786.77
  5. Step 5: Solve for x
    x = 39,040,385,786.77/207,665.48
  6. Step 6: Final answer
    x = 187,996.51

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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.