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Finding the Fourth Proportional to 173,620.40, 260,430.60 and 103,636.40

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Solution

The fourth proportional to 173,620.40, 260,430.60 and 103,636.40 is: 155,454.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,620.40 : 260,430.60 = 103,636.40 : x
  2. Step 2: Convert to fraction form
    173,620.40/260,430.60 = 103,636.40/x
  3. Step 3: Cross multiply
    173,620.40x = 260,430.60 × 103,636.40
  4. Step 4: Simplify right side
    173,620.40x = 26,990,089,833.84
  5. Step 5: Solve for x
    x = 26,990,089,833.84/173,620.40
  6. Step 6: Final answer
    x = 155,454.60

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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.