Home / 154,119.43-212,666.88-86,136.54

Finding the Fourth Proportional to 154,119.43, 212,666.88 and 86,136.54

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Solution

The fourth proportional to 154,119.43, 212,666.88 and 86,136.54 is: 118,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,119.43 : 212,666.88 = 86,136.54 : x
  2. Step 2: Convert to fraction form
    154,119.43/212,666.88 = 86,136.54/x
  3. Step 3: Cross multiply
    154,119.43x = 212,666.88 × 86,136.54
  4. Step 4: Simplify right side
    154,119.43x = 18,318,389,215.80
  5. Step 5: Solve for x
    x = 18,318,389,215.80/154,119.43
  6. Step 6: Final answer
    x = 118,858.40

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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.