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Finding the Fourth Proportional to 131,661.40, 197,330.10 and 89,541.40

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Solution

The fourth proportional to 131,661.40, 197,330.10 and 89,541.40 is: 134,201.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,661.40 : 197,330.10 = 89,541.40 : x
  2. Step 2: Convert to fraction form
    131,661.40/197,330.10 = 89,541.40/x
  3. Step 3: Cross multiply
    131,661.40x = 197,330.10 × 89,541.40
  4. Step 4: Simplify right side
    131,661.40x = 17,669,213,416.14
  5. Step 5: Solve for x
    x = 17,669,213,416.14/131,661.40
  6. Step 6: Final answer
    x = 134,201.93

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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.