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Finding the Fourth Proportional to 202,173.93, 278,995.53 and 111,529.98

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Solution

The fourth proportional to 202,173.93, 278,995.53 and 111,529.98 is: 153,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,173.93 : 278,995.53 = 111,529.98 : x
  2. Step 2: Convert to fraction form
    202,173.93/278,995.53 = 111,529.98/x
  3. Step 3: Cross multiply
    202,173.93x = 278,995.53 × 111,529.98
  4. Step 4: Simplify right side
    202,173.93x = 31,116,365,880.99
  5. Step 5: Solve for x
    x = 31,116,365,880.99/202,173.93
  6. Step 6: Final answer
    x = 153,908.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.