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Finding the Fourth Proportional to 128,402.14, 192,603.81 and 45,296.14

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Solution

The fourth proportional to 128,402.14, 192,603.81 and 45,296.14 is: 67,944.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,402.14 : 192,603.81 = 45,296.14 : x
  2. Step 2: Convert to fraction form
    128,402.14/192,603.81 = 45,296.14/x
  3. Step 3: Cross multiply
    128,402.14x = 192,603.81 × 45,296.14
  4. Step 4: Simplify right side
    128,402.14x = 8,724,209,142.29
  5. Step 5: Solve for x
    x = 8,724,209,142.29/128,402.14
  6. Step 6: Final answer
    x = 67,944.42

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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.