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Finding the Fourth Proportional to 145,206.78, 217,840.41 and 45,362.94

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Solution

The fourth proportional to 145,206.78, 217,840.41 and 45,362.94 is: 68,053.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,206.78 : 217,840.41 = 45,362.94 : x
  2. Step 2: Convert to fraction form
    145,206.78/217,840.41 = 45,362.94/x
  3. Step 3: Cross multiply
    145,206.78x = 217,840.41 × 45,362.94
  4. Step 4: Simplify right side
    145,206.78x = 9,881,881,448.41
  5. Step 5: Solve for x
    x = 9,881,881,448.41/145,206.78
  6. Step 6: Final answer
    x = 68,053.86

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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.