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Finding the Fourth Proportional to 153,724.70, 212,059.41 and 125,076.40

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Solution

The fourth proportional to 153,724.70, 212,059.41 and 125,076.40 is: 172,539.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,724.70 : 212,059.41 = 125,076.40 : x
  2. Step 2: Convert to fraction form
    153,724.70/212,059.41 = 125,076.40/x
  3. Step 3: Cross multiply
    153,724.70x = 212,059.41 × 125,076.40
  4. Step 4: Simplify right side
    153,724.70x = 26,523,627,588.92
  5. Step 5: Solve for x
    x = 26,523,627,588.92/153,724.70
  6. Step 6: Final answer
    x = 172,539.79

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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.