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Finding the Fourth Proportional to 201,376.94, 302,045.91 and 61,136.78

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Solution

The fourth proportional to 201,376.94, 302,045.91 and 61,136.78 is: 91,699.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,376.94 : 302,045.91 = 61,136.78 : x
  2. Step 2: Convert to fraction form
    201,376.94/302,045.91 = 61,136.78/x
  3. Step 3: Cross multiply
    201,376.94x = 302,045.91 × 61,136.78
  4. Step 4: Simplify right side
    201,376.94x = 18,466,114,349.57
  5. Step 5: Solve for x
    x = 18,466,114,349.57/201,376.94
  6. Step 6: Final answer
    x = 91,699.25

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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.