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Finding the Fourth Proportional to 131,981.10, 197,971.65 and 131,981.10

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Solution

The fourth proportional to 131,981.10, 197,971.65 and 131,981.10 is: 197,971.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,981.10 : 197,971.65 = 131,981.10 : x
  2. Step 2: Convert to fraction form
    131,981.10/197,971.65 = 131,981.10/x
  3. Step 3: Cross multiply
    131,981.10x = 197,971.65 × 131,981.10
  4. Step 4: Simplify right side
    131,981.10x = 26,128,516,135.82
  5. Step 5: Solve for x
    x = 26,128,516,135.82/131,981.10
  6. Step 6: Final answer
    x = 197,971.65

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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.