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Finding the Fourth Proportional to 115,887.40, 173,571.90 and 100,335.40

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Solution

The fourth proportional to 115,887.40, 173,571.90 and 100,335.40 is: 150,278.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,887.40 : 173,571.90 = 100,335.40 : x
  2. Step 2: Convert to fraction form
    115,887.40/173,571.90 = 100,335.40/x
  3. Step 3: Cross multiply
    115,887.40x = 173,571.90 × 100,335.40
  4. Step 4: Simplify right side
    115,887.40x = 17,415,406,015.26
  5. Step 5: Solve for x
    x = 17,415,406,015.26/115,887.40
  6. Step 6: Final answer
    x = 150,278.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.