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Finding the Fourth Proportional to 131,808.17, 181,898.39 and 75,224.81

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Solution

The fourth proportional to 131,808.17, 181,898.39 and 75,224.81 is: 103,812.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,808.17 : 181,898.39 = 75,224.81 : x
  2. Step 2: Convert to fraction form
    131,808.17/181,898.39 = 75,224.81/x
  3. Step 3: Cross multiply
    131,808.17x = 181,898.39 × 75,224.81
  4. Step 4: Simplify right side
    131,808.17x = 13,683,271,450.93
  5. Step 5: Solve for x
    x = 13,683,271,450.93/131,808.17
  6. Step 6: Final answer
    x = 103,812.01

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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.