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Finding the Fourth Proportional to 115,355.49, 159,184.49 and 65,051.25

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Solution

The fourth proportional to 115,355.49, 159,184.49 and 65,051.25 is: 89,767.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,355.49 : 159,184.49 = 65,051.25 : x
  2. Step 2: Convert to fraction form
    115,355.49/159,184.49 = 65,051.25/x
  3. Step 3: Cross multiply
    115,355.49x = 159,184.49 × 65,051.25
  4. Step 4: Simplify right side
    115,355.49x = 10,355,149,729.86
  5. Step 5: Solve for x
    x = 10,355,149,729.86/115,355.49
  6. Step 6: Final answer
    x = 89,767.29

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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.