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Finding the Fourth Proportional to 131,495.70, 197,243.55 and 121,358.10

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Solution

The fourth proportional to 131,495.70, 197,243.55 and 121,358.10 is: 182,037.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,495.70 : 197,243.55 = 121,358.10 : x
  2. Step 2: Convert to fraction form
    131,495.70/197,243.55 = 121,358.10/x
  3. Step 3: Cross multiply
    131,495.70x = 197,243.55 × 121,358.10
  4. Step 4: Simplify right side
    131,495.70x = 23,937,102,465.26
  5. Step 5: Solve for x
    x = 23,937,102,465.26/131,495.70
  6. Step 6: Final answer
    x = 182,037.15

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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.