Home / 115,460.40-173,190.60-78,135.60

Finding the Fourth Proportional to 115,460.40, 173,190.60 and 78,135.60

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Solution

The fourth proportional to 115,460.40, 173,190.60 and 78,135.60 is: 117,203.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,460.40 : 173,190.60 = 78,135.60 : x
  2. Step 2: Convert to fraction form
    115,460.40/173,190.60 = 78,135.60/x
  3. Step 3: Cross multiply
    115,460.40x = 173,190.60 × 78,135.60
  4. Step 4: Simplify right side
    115,460.40x = 13,532,351,445.36
  5. Step 5: Solve for x
    x = 13,532,351,445.36/115,460.40
  6. Step 6: Final answer
    x = 117,203.40

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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.