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Finding the Fourth Proportional to 109,658.60, 164,099.10 and 74,666.60

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Solution

The fourth proportional to 109,658.60, 164,099.10 and 74,666.60 is: 111,735.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,658.60 : 164,099.10 = 74,666.60 : x
  2. Step 2: Convert to fraction form
    109,658.60/164,099.10 = 74,666.60/x
  3. Step 3: Cross multiply
    109,658.60x = 164,099.10 × 74,666.60
  4. Step 4: Simplify right side
    109,658.60x = 12,252,721,860.06
  5. Step 5: Solve for x
    x = 12,252,721,860.06/109,658.60
  6. Step 6: Final answer
    x = 111,735.17

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1.5x scale

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.