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Finding the Fourth Proportional to 161,715.48, 242,571.60 and 115,263.60

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Solution

The fourth proportional to 161,715.48, 242,571.60 and 115,263.60 is: 172,894.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,715.48 : 242,571.60 = 115,263.60 : x
  2. Step 2: Convert to fraction form
    161,715.48/242,571.60 = 115,263.60/x
  3. Step 3: Cross multiply
    161,715.48x = 242,571.60 × 115,263.60
  4. Step 4: Simplify right side
    161,715.48x = 27,959,675,873.76
  5. Step 5: Solve for x
    x = 27,959,675,873.76/161,715.48
  6. Step 6: Final answer
    x = 172,894.25

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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.