Home / 154,043.48-212,585.64-85,133.54

Finding the Fourth Proportional to 154,043.48, 212,585.64 and 85,133.54

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Solution

The fourth proportional to 154,043.48, 212,585.64 and 85,133.54 is: 117,487.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,043.48 : 212,585.64 = 85,133.54 : x
  2. Step 2: Convert to fraction form
    154,043.48/212,585.64 = 85,133.54/x
  3. Step 3: Cross multiply
    154,043.48x = 212,585.64 × 85,133.54
  4. Step 4: Simplify right side
    154,043.48x = 18,098,168,086.37
  5. Step 5: Solve for x
    x = 18,098,168,086.37/154,043.48
  6. Step 6: Final answer
    x = 117,487.40

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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.