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Finding the Fourth Proportional to 115,762.62, 173,525.58 and 78,326.64

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Solution

The fourth proportional to 115,762.62, 173,525.58 and 78,326.64 is: 117,409.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,762.62 : 173,525.58 = 78,326.64 : x
  2. Step 2: Convert to fraction form
    115,762.62/173,525.58 = 78,326.64/x
  3. Step 3: Cross multiply
    115,762.62x = 173,525.58 × 78,326.64
  4. Step 4: Simplify right side
    115,762.62x = 13,591,675,635.45
  5. Step 5: Solve for x
    x = 13,591,675,635.45/115,762.62
  6. Step 6: Final answer
    x = 117,409.88

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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.