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Finding the Fourth Proportional to 151,989.81, 227,988.60 and 72,009.04

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Solution

The fourth proportional to 151,989.81, 227,988.60 and 72,009.04 is: 108,015.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,989.81 : 227,988.60 = 72,009.04 : x
  2. Step 2: Convert to fraction form
    151,989.81/227,988.60 = 72,009.04/x
  3. Step 3: Cross multiply
    151,989.81x = 227,988.60 × 72,009.04
  4. Step 4: Simplify right side
    151,989.81x = 16,417,240,216.94
  5. Step 5: Solve for x
    x = 16,417,240,216.94/151,989.81
  6. Step 6: Final answer
    x = 108,015.40

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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.