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Finding the Fourth Proportional to 103,649.87, 155,474.78 and 28,770.01

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Solution

The fourth proportional to 103,649.87, 155,474.78 and 28,770.01 is: 43,155.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,649.87 : 155,474.78 = 28,770.01 : x
  2. Step 2: Convert to fraction form
    103,649.87/155,474.78 = 28,770.01/x
  3. Step 3: Cross multiply
    103,649.87x = 155,474.78 × 28,770.01
  4. Step 4: Simplify right side
    103,649.87x = 4,473,010,442.81
  5. Step 5: Solve for x
    x = 4,473,010,442.81/103,649.87
  6. Step 6: Final answer
    x = 43,155.00

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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.