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Finding the Fourth Proportional to 109,902.60, 164,853.90 and 103,341.60

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Solution

The fourth proportional to 109,902.60, 164,853.90 and 103,341.60 is: 155,012.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,902.60 : 164,853.90 = 103,341.60 : x
  2. Step 2: Convert to fraction form
    109,902.60/164,853.90 = 103,341.60/x
  3. Step 3: Cross multiply
    109,902.60x = 164,853.90 × 103,341.60
  4. Step 4: Simplify right side
    109,902.60x = 17,036,265,792.24
  5. Step 5: Solve for x
    x = 17,036,265,792.24/109,902.60
  6. Step 6: Final answer
    x = 155,012.40

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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.