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Finding the Fourth Proportional to 114,509.93, 158,015.72 and 66,113.78

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Solution

The fourth proportional to 114,509.93, 158,015.72 and 66,113.78 is: 91,232.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,509.93 : 158,015.72 = 66,113.78 : x
  2. Step 2: Convert to fraction form
    114,509.93/158,015.72 = 66,113.78/x
  3. Step 3: Cross multiply
    114,509.93x = 158,015.72 × 66,113.78
  4. Step 4: Simplify right side
    114,509.93x = 10,447,016,218.05
  5. Step 5: Solve for x
    x = 10,447,016,218.05/114,509.93
  6. Step 6: Final answer
    x = 91,232.40

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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.