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Finding the Fourth Proportional to 115,358.49, 159,188.63 and 65,054.25

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Solution

The fourth proportional to 115,358.49, 159,188.63 and 65,054.25 is: 89,771.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,358.49 : 159,188.63 = 65,054.25 : x
  2. Step 2: Convert to fraction form
    115,358.49/159,188.63 = 65,054.25/x
  3. Step 3: Cross multiply
    115,358.49x = 159,188.63 × 65,054.25
  4. Step 4: Simplify right side
    115,358.49x = 10,355,896,607.91
  5. Step 5: Solve for x
    x = 10,355,896,607.91/115,358.49
  6. Step 6: Final answer
    x = 89,771.43

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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.