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Finding the Fourth Proportional to 115,372.08, 159,213.60 and 65,071.08

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Solution

The fourth proportional to 115,372.08, 159,213.60 and 65,071.08 is: 89,798.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,372.08 : 159,213.60 = 65,071.08 : x
  2. Step 2: Convert to fraction form
    115,372.08/159,213.60 = 65,071.08/x
  3. Step 3: Cross multiply
    115,372.08x = 159,213.60 × 65,071.08
  4. Step 4: Simplify right side
    115,372.08x = 10,360,200,902.69
  5. Step 5: Solve for x
    x = 10,360,200,902.69/115,372.08
  6. Step 6: Final answer
    x = 89,798.16

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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.