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Finding the Fourth Proportional to 148,652.60, 205,136.34 and 80,666.60

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Solution

The fourth proportional to 148,652.60, 205,136.34 and 80,666.60 is: 111,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,652.60 : 205,136.34 = 80,666.60 : x
  2. Step 2: Convert to fraction form
    148,652.60/205,136.34 = 80,666.60/x
  3. Step 3: Cross multiply
    148,652.60x = 205,136.34 × 80,666.60
  4. Step 4: Simplify right side
    148,652.60x = 16,547,651,084.24
  5. Step 5: Solve for x
    x = 16,547,651,084.24/148,652.60
  6. Step 6: Final answer
    x = 111,317.60

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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.