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Finding the Fourth Proportional to 131,041, 180,840.42 and 74,454.76

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Solution

The fourth proportional to 131,041, 180,840.42 and 74,454.76 is: 102,749.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,041 : 180,840.42 = 74,454.76 : x
  2. Step 2: Convert to fraction form
    131,041/180,840.42 = 74,454.76/x
  3. Step 3: Cross multiply
    131,041x = 180,840.42 × 74,454.76
  4. Step 4: Simplify right side
    131,041x = 13,464,430,069.40
  5. Step 5: Solve for x
    x = 13,464,430,069.40/131,041
  6. Step 6: Final answer
    x = 102,749.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.