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Finding the Fourth Proportional to 115,260.72, 159,054.87 and 85,035.16

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Solution

The fourth proportional to 115,260.72, 159,054.87 and 85,035.16 is: 117,344.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,260.72 : 159,054.87 = 85,035.16 : x
  2. Step 2: Convert to fraction form
    115,260.72/159,054.87 = 85,035.16/x
  3. Step 3: Cross multiply
    115,260.72x = 159,054.87 × 85,035.16
  4. Step 4: Simplify right side
    115,260.72x = 13,525,256,319.23
  5. Step 5: Solve for x
    x = 13,525,256,319.23/115,260.72
  6. Step 6: Final answer
    x = 117,344.89

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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.