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Finding the Fourth Proportional to 98,787.60, 148,181.40 and 43,383.60

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Solution

The fourth proportional to 98,787.60, 148,181.40 and 43,383.60 is: 65,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,787.60 : 148,181.40 = 43,383.60 : x
  2. Step 2: Convert to fraction form
    98,787.60/148,181.40 = 43,383.60/x
  3. Step 3: Cross multiply
    98,787.60x = 148,181.40 × 43,383.60
  4. Step 4: Simplify right side
    98,787.60x = 6,428,642,585.04
  5. Step 5: Solve for x
    x = 6,428,642,585.04/98,787.60
  6. Step 6: Final answer
    x = 65,075.40

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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.