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Finding the Fourth Proportional to 153,391.40, 229,824.30 and 121,898.60

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Solution

The fourth proportional to 153,391.40, 229,824.30 and 121,898.60 is: 182,639.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,391.40 : 229,824.30 = 121,898.60 : x
  2. Step 2: Convert to fraction form
    153,391.40/229,824.30 = 121,898.60/x
  3. Step 3: Cross multiply
    153,391.40x = 229,824.30 × 121,898.60
  4. Step 4: Simplify right side
    153,391.40x = 28,015,260,415.98
  5. Step 5: Solve for x
    x = 28,015,260,415.98/153,391.40
  6. Step 6: Final answer
    x = 182,639.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.