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Finding the Fourth Proportional to 149,580.88, 206,419.80 and 85,919.20

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Solution

The fourth proportional to 149,580.88, 206,419.80 and 85,919.20 is: 118,567.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,580.88 : 206,419.80 = 85,919.20 : x
  2. Step 2: Convert to fraction form
    149,580.88/206,419.80 = 85,919.20/x
  3. Step 3: Cross multiply
    149,580.88x = 206,419.80 × 85,919.20
  4. Step 4: Simplify right side
    149,580.88x = 17,735,424,080.16
  5. Step 5: Solve for x
    x = 17,735,424,080.16/149,580.88
  6. Step 6: Final answer
    x = 118,567.45

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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.