Home / 207,731.64-286,906.12-139,630.38

Finding the Fourth Proportional to 207,731.64, 286,906.12 and 139,630.38

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Solution

The fourth proportional to 207,731.64, 286,906.12 and 139,630.38 is: 192,848.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,731.64 : 286,906.12 = 139,630.38 : x
  2. Step 2: Convert to fraction form
    207,731.64/286,906.12 = 139,630.38/x
  3. Step 3: Cross multiply
    207,731.64x = 286,906.12 × 139,630.38
  4. Step 4: Simplify right side
    207,731.64x = 40,060,810,559.93
  5. Step 5: Solve for x
    x = 40,060,810,559.93/207,731.64
  6. Step 6: Final answer
    x = 192,848.86

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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.