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Finding the Fourth Proportional to 115,372.70, 159,214.17 and 65,071.70

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Solution

The fourth proportional to 115,372.70, 159,214.17 and 65,071.70 is: 89,798.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,372.70 : 159,214.17 = 65,071.70 : x
  2. Step 2: Convert to fraction form
    115,372.70/159,214.17 = 65,071.70/x
  3. Step 3: Cross multiply
    115,372.70x = 159,214.17 × 65,071.70
  4. Step 4: Simplify right side
    115,372.70x = 10,360,336,705.99
  5. Step 5: Solve for x
    x = 10,360,336,705.99/115,372.70
  6. Step 6: Final answer
    x = 89,798.86

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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.