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Finding the Fourth Proportional to 190,404.51, 285,621.09 and 64,045.11

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Solution

The fourth proportional to 190,404.51, 285,621.09 and 64,045.11 is: 96,072.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,404.51 : 285,621.09 = 64,045.11 : x
  2. Step 2: Convert to fraction form
    190,404.51/285,621.09 = 64,045.11/x
  3. Step 3: Cross multiply
    190,404.51x = 285,621.09 × 64,045.11
  4. Step 4: Simplify right side
    190,404.51x = 18,292,634,127.37
  5. Step 5: Solve for x
    x = 18,292,634,127.37/190,404.51
  6. Step 6: Final answer
    x = 96,072.48

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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.