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Finding the Fourth Proportional to 103,069.92, 154,602.69 and 28,190.07

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Solution

The fourth proportional to 103,069.92, 154,602.69 and 28,190.07 is: 42,284.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,069.92 : 154,602.69 = 28,190.07 : x
  2. Step 2: Convert to fraction form
    103,069.92/154,602.69 = 28,190.07/x
  3. Step 3: Cross multiply
    103,069.92x = 154,602.69 × 28,190.07
  4. Step 4: Simplify right side
    103,069.92x = 4,358,259,739.32
  5. Step 5: Solve for x
    x = 4,358,259,739.32/103,069.92
  6. Step 6: Final answer
    x = 42,284.50

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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.