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Finding the Fourth Proportional to 154,941.92, 213,817.04 and 86,953.56

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Solution

The fourth proportional to 154,941.92, 213,817.04 and 86,953.56 is: 119,994.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,941.92 : 213,817.04 = 86,953.56 : x
  2. Step 2: Convert to fraction form
    154,941.92/213,817.04 = 86,953.56/x
  3. Step 3: Cross multiply
    154,941.92x = 213,817.04 × 86,953.56
  4. Step 4: Simplify right side
    154,941.92x = 18,592,152,816.66
  5. Step 5: Solve for x
    x = 18,592,152,816.66/154,941.92
  6. Step 6: Final answer
    x = 119,994.34

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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.