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Finding the Fourth Proportional to 201,391.60, 302,130.60 and 61,164.40

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Solution

The fourth proportional to 201,391.60, 302,130.60 and 61,164.40 is: 91,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,391.60 : 302,130.60 = 61,164.40 : x
  2. Step 2: Convert to fraction form
    201,391.60/302,130.60 = 61,164.40/x
  3. Step 3: Cross multiply
    201,391.60x = 302,130.60 × 61,164.40
  4. Step 4: Simplify right side
    201,391.60x = 18,479,636,870.64
  5. Step 5: Solve for x
    x = 18,479,636,870.64/201,391.60
  6. Step 6: Final answer
    x = 91,759.72

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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.