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Finding the Fourth Proportional to 161,916.60, 242,486.10 and 130,812.60

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Solution

The fourth proportional to 161,916.60, 242,486.10 and 130,812.60 is: 195,904.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,916.60 : 242,486.10 = 130,812.60 : x
  2. Step 2: Convert to fraction form
    161,916.60/242,486.10 = 130,812.60/x
  3. Step 3: Cross multiply
    161,916.60x = 242,486.10 × 130,812.60
  4. Step 4: Simplify right side
    161,916.60x = 31,720,237,204.86
  5. Step 5: Solve for x
    x = 31,720,237,204.86/161,916.60
  6. Step 6: Final answer
    x = 195,904.79

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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.