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Finding the Fourth Proportional to 145,395, 217,935.36 and 61,135.56

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Solution

The fourth proportional to 145,395, 217,935.36 and 61,135.56 is: 91,637.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,395 : 217,935.36 = 61,135.56 : x
  2. Step 2: Convert to fraction form
    145,395/217,935.36 = 61,135.56/x
  3. Step 3: Cross multiply
    145,395x = 217,935.36 × 61,135.56
  4. Step 4: Simplify right side
    145,395x = 13,323,600,277.40
  5. Step 5: Solve for x
    x = 13,323,600,277.40/145,395
  6. Step 6: Final answer
    x = 91,637.27

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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.