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Finding the Fourth Proportional to 250,007.15, 345,018.10 and 136,829.90

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Solution

The fourth proportional to 250,007.15, 345,018.10 and 136,829.90 is: 188,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,007.15 : 345,018.10 = 136,829.90 : x
  2. Step 2: Convert to fraction form
    250,007.15/345,018.10 = 136,829.90/x
  3. Step 3: Cross multiply
    250,007.15x = 345,018.10 × 136,829.90
  4. Step 4: Simplify right side
    250,007.15x = 47,208,792,121.19
  5. Step 5: Solve for x
    x = 47,208,792,121.19/250,007.15
  6. Step 6: Final answer
    x = 188,829.77

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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.