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Finding the Fourth Proportional to 114,911.70, 172,367.55 and 107,999.70

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Solution

The fourth proportional to 114,911.70, 172,367.55 and 107,999.70 is: 161,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,911.70 : 172,367.55 = 107,999.70 : x
  2. Step 2: Convert to fraction form
    114,911.70/172,367.55 = 107,999.70/x
  3. Step 3: Cross multiply
    114,911.70x = 172,367.55 × 107,999.70
  4. Step 4: Simplify right side
    114,911.70x = 18,615,643,689.74
  5. Step 5: Solve for x
    x = 18,615,643,689.74/114,911.70
  6. Step 6: Final answer
    x = 161,999.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.