Home / 154,172.85-212,760.11-86,193.60

Finding the Fourth Proportional to 154,172.85, 212,760.11 and 86,193.60

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Solution

The fourth proportional to 154,172.85, 212,760.11 and 86,193.60 is: 118,948.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,172.85 : 212,760.11 = 86,193.60 : x
  2. Step 2: Convert to fraction form
    154,172.85/212,760.11 = 86,193.60/x
  3. Step 3: Cross multiply
    154,172.85x = 212,760.11 × 86,193.60
  4. Step 4: Simplify right side
    154,172.85x = 18,338,559,817.30
  5. Step 5: Solve for x
    x = 18,338,559,817.30/154,172.85
  6. Step 6: Final answer
    x = 118,948.05

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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.