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Finding the Fourth Proportional to 117,000.25, 175,421.09 and 45,878.40

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Solution

The fourth proportional to 117,000.25, 175,421.09 and 45,878.40 is: 68,786.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,000.25 : 175,421.09 = 45,878.40 : x
  2. Step 2: Convert to fraction form
    117,000.25/175,421.09 = 45,878.40/x
  3. Step 3: Cross multiply
    117,000.25x = 175,421.09 × 45,878.40
  4. Step 4: Simplify right side
    117,000.25x = 8,048,039,050.15
  5. Step 5: Solve for x
    x = 8,048,039,050.15/117,000.25
  6. Step 6: Final answer
    x = 68,786.51

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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.