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Finding the Fourth Proportional to 98,645.60, 147,968.40 and 43,241.60

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Solution

The fourth proportional to 98,645.60, 147,968.40 and 43,241.60 is: 64,862.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,645.60 : 147,968.40 = 43,241.60 : x
  2. Step 2: Convert to fraction form
    98,645.60/147,968.40 = 43,241.60/x
  3. Step 3: Cross multiply
    98,645.60x = 147,968.40 × 43,241.60
  4. Step 4: Simplify right side
    98,645.60x = 6,398,390,365.44
  5. Step 5: Solve for x
    x = 6,398,390,365.44/98,645.60
  6. Step 6: Final answer
    x = 64,862.40

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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.