Home / 149,905.10-206,871.60-89,464.02

Finding the Fourth Proportional to 149,905.10, 206,871.60 and 89,464.02

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Solution

The fourth proportional to 149,905.10, 206,871.60 and 89,464.02 is: 123,461.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,905.10 : 206,871.60 = 89,464.02 : x
  2. Step 2: Convert to fraction form
    149,905.10/206,871.60 = 89,464.02/x
  3. Step 3: Cross multiply
    149,905.10x = 206,871.60 × 89,464.02
  4. Step 4: Simplify right side
    149,905.10x = 18,507,564,959.83
  5. Step 5: Solve for x
    x = 18,507,564,959.83/149,905.10
  6. Step 6: Final answer
    x = 123,461.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.