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Finding the Fourth Proportional to 131,705.48, 197,578.74 and 42,938.48

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Solution

The fourth proportional to 131,705.48, 197,578.74 and 42,938.48 is: 64,414.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,705.48 : 197,578.74 = 42,938.48 : x
  2. Step 2: Convert to fraction form
    131,705.48/197,578.74 = 42,938.48/x
  3. Step 3: Cross multiply
    131,705.48x = 197,578.74 × 42,938.48
  4. Step 4: Simplify right side
    131,705.48x = 8,483,730,775.92
  5. Step 5: Solve for x
    x = 8,483,730,775.92/131,705.48
  6. Step 6: Final answer
    x = 64,414.41

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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.