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Finding the Fourth Proportional to 103,670.37, 155,486.71 and 28,771.69

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Solution

The fourth proportional to 103,670.37, 155,486.71 and 28,771.69 is: 43,152.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,670.37 : 155,486.71 = 28,771.69 : x
  2. Step 2: Convert to fraction form
    103,670.37/155,486.71 = 28,771.69/x
  3. Step 3: Cross multiply
    103,670.37x = 155,486.71 × 28,771.69
  4. Step 4: Simplify right side
    103,670.37x = 4,473,615,419.24
  5. Step 5: Solve for x
    x = 4,473,615,419.24/103,670.37
  6. Step 6: Final answer
    x = 43,152.30

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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.