Home / 154,330.12-212,983.85-86,343.04

Finding the Fourth Proportional to 154,330.12, 212,983.85 and 86,343.04

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Solution

The fourth proportional to 154,330.12, 212,983.85 and 86,343.04 is: 119,158.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,330.12 : 212,983.85 = 86,343.04 : x
  2. Step 2: Convert to fraction form
    154,330.12/212,983.85 = 86,343.04/x
  3. Step 3: Cross multiply
    154,330.12x = 212,983.85 × 86,343.04
  4. Step 4: Simplify right side
    154,330.12x = 18,389,673,076.31
  5. Step 5: Solve for x
    x = 18,389,673,076.31/154,330.12
  6. Step 6: Final answer
    x = 119,158.03

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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.