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Finding the Fourth Proportional to 161,712.70, 242,569.05 and 154,887.10

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Solution

The fourth proportional to 161,712.70, 242,569.05 and 154,887.10 is: 232,330.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,712.70 : 242,569.05 = 154,887.10 : x
  2. Step 2: Convert to fraction form
    161,712.70/242,569.05 = 154,887.10/x
  3. Step 3: Cross multiply
    161,712.70x = 242,569.05 × 154,887.10
  4. Step 4: Simplify right side
    161,712.70x = 37,570,816,704.26
  5. Step 5: Solve for x
    x = 37,570,816,704.26/161,712.70
  6. Step 6: Final answer
    x = 232,330.65

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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.