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Finding the Fourth Proportional to 144,923.67, 199,994.67 and 81,261.47

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Solution

The fourth proportional to 144,923.67, 199,994.67 and 81,261.47 is: 112,140.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,923.67 : 199,994.67 = 81,261.47 : x
  2. Step 2: Convert to fraction form
    144,923.67/199,994.67 = 81,261.47/x
  3. Step 3: Cross multiply
    144,923.67x = 199,994.67 × 81,261.47
  4. Step 4: Simplify right side
    144,923.67x = 16,251,861,376.35
  5. Step 5: Solve for x
    x = 16,251,861,376.35/144,923.67
  6. Step 6: Final answer
    x = 112,140.84

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1.5x scale

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.