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Finding the Fourth Proportional to 115,575.40, 173,622.30 and 80,583.40

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Solution

The fourth proportional to 115,575.40, 173,622.30 and 80,583.40 is: 121,055.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,575.40 : 173,622.30 = 80,583.40 : x
  2. Step 2: Convert to fraction form
    115,575.40/173,622.30 = 80,583.40/x
  3. Step 3: Cross multiply
    115,575.40x = 173,622.30 × 80,583.40
  4. Step 4: Simplify right side
    115,575.40x = 13,991,075,249.82
  5. Step 5: Solve for x
    x = 13,991,075,249.82/115,575.40
  6. Step 6: Final answer
    x = 121,055.82

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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.