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Finding the Fourth Proportional to 98,665.60, 147,998.40 and 43,261.60

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Solution

The fourth proportional to 98,665.60, 147,998.40 and 43,261.60 is: 64,892.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,665.60 : 147,998.40 = 43,261.60 : x
  2. Step 2: Convert to fraction form
    98,665.60/147,998.40 = 43,261.60/x
  3. Step 3: Cross multiply
    98,665.60x = 147,998.40 × 43,261.60
  4. Step 4: Simplify right side
    98,665.60x = 6,402,647,581.44
  5. Step 5: Solve for x
    x = 6,402,647,581.44/98,665.60
  6. Step 6: Final answer
    x = 64,892.40

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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.