Home / 189,947.80-284,921.70-111,021.40

Finding the Fourth Proportional to 189,947.80, 284,921.70 and 111,021.40

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Solution

The fourth proportional to 189,947.80, 284,921.70 and 111,021.40 is: 166,532.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,947.80 : 284,921.70 = 111,021.40 : x
  2. Step 2: Convert to fraction form
    189,947.80/284,921.70 = 111,021.40/x
  3. Step 3: Cross multiply
    189,947.80x = 284,921.70 × 111,021.40
  4. Step 4: Simplify right side
    189,947.80x = 31,632,406,024.38
  5. Step 5: Solve for x
    x = 31,632,406,024.38/189,947.80
  6. Step 6: Final answer
    x = 166,532.10

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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.