Home / 149,628.90-206,459.60-89,205.12

Finding the Fourth Proportional to 149,628.90, 206,459.60 and 89,205.12

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Solution

The fourth proportional to 149,628.90, 206,459.60 and 89,205.12 is: 123,086.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,628.90 : 206,459.60 = 89,205.12 : x
  2. Step 2: Convert to fraction form
    149,628.90/206,459.60 = 89,205.12/x
  3. Step 3: Cross multiply
    149,628.90x = 206,459.60 × 89,205.12
  4. Step 4: Simplify right side
    149,628.90x = 18,417,252,947.13
  5. Step 5: Solve for x
    x = 18,417,252,947.13/149,628.90
  6. Step 6: Final answer
    x = 123,086.20

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1.5x scale

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.