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Finding the Fourth Proportional to 115,878.40, 173,817.60 and 84,774.40

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Solution

The fourth proportional to 115,878.40, 173,817.60 and 84,774.40 is: 127,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,878.40 : 173,817.60 = 84,774.40 : x
  2. Step 2: Convert to fraction form
    115,878.40/173,817.60 = 84,774.40/x
  3. Step 3: Cross multiply
    115,878.40x = 173,817.60 × 84,774.40
  4. Step 4: Simplify right side
    115,878.40x = 14,735,282,749.44
  5. Step 5: Solve for x
    x = 14,735,282,749.44/115,878.40
  6. Step 6: Final answer
    x = 127,161.60

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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.