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Finding the Fourth Proportional to 103,630.06, 155,445.07 and 28,750.20

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Solution

The fourth proportional to 103,630.06, 155,445.07 and 28,750.20 is: 43,125.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,630.06 : 155,445.07 = 28,750.20 : x
  2. Step 2: Convert to fraction form
    103,630.06/155,445.07 = 28,750.20/x
  3. Step 3: Cross multiply
    103,630.06x = 155,445.07 × 28,750.20
  4. Step 4: Simplify right side
    103,630.06x = 4,469,076,851.51
  5. Step 5: Solve for x
    x = 4,469,076,851.51/103,630.06
  6. Step 6: Final answer
    x = 43,125.29

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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.