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Finding the Fourth Proportional to 109,241.60, 163,900.80 and 105,401.60

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Solution

The fourth proportional to 109,241.60, 163,900.80 and 105,401.60 is: 158,139.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,241.60 : 163,900.80 = 105,401.60 : x
  2. Step 2: Convert to fraction form
    109,241.60/163,900.80 = 105,401.60/x
  3. Step 3: Cross multiply
    109,241.60x = 163,900.80 × 105,401.60
  4. Step 4: Simplify right side
    109,241.60x = 17,275,406,561.28
  5. Step 5: Solve for x
    x = 17,275,406,561.28/109,241.60
  6. Step 6: Final answer
    x = 158,139.45

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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.