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Finding the Fourth Proportional to 131,969.60, 197,954.40 and 122,638.40

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Solution

The fourth proportional to 131,969.60, 197,954.40 and 122,638.40 is: 183,957.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,969.60 : 197,954.40 = 122,638.40 : x
  2. Step 2: Convert to fraction form
    131,969.60/197,954.40 = 122,638.40/x
  3. Step 3: Cross multiply
    131,969.60x = 197,954.40 × 122,638.40
  4. Step 4: Simplify right side
    131,969.60x = 24,276,810,888.96
  5. Step 5: Solve for x
    x = 24,276,810,888.96/131,969.60
  6. Step 6: Final answer
    x = 183,957.60

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1.5x scale

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.