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Finding the Fourth Proportional to 115,445.60, 173,168.40 and 113,890.40

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Solution

The fourth proportional to 115,445.60, 173,168.40 and 113,890.40 is: 170,835.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,445.60 : 173,168.40 = 113,890.40 : x
  2. Step 2: Convert to fraction form
    115,445.60/173,168.40 = 113,890.40/x
  3. Step 3: Cross multiply
    115,445.60x = 173,168.40 × 113,890.40
  4. Step 4: Simplify right side
    115,445.60x = 19,722,218,343.36
  5. Step 5: Solve for x
    x = 19,722,218,343.36/115,445.60
  6. Step 6: Final answer
    x = 170,835.60

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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.