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Finding the Fourth Proportional to 250,009.16, 345,020.86 and 136,831.90

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Solution

The fourth proportional to 250,009.16, 345,020.86 and 136,831.90 is: 188,832.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,009.16 : 345,020.86 = 136,831.90 : x
  2. Step 2: Convert to fraction form
    250,009.16/345,020.86 = 136,831.90/x
  3. Step 3: Cross multiply
    250,009.16x = 345,020.86 × 136,831.90
  4. Step 4: Simplify right side
    250,009.16x = 47,209,859,813.43
  5. Step 5: Solve for x
    x = 47,209,859,813.43/250,009.16
  6. Step 6: Final answer
    x = 188,832.52

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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.