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Finding the Fourth Proportional to 105,571.40, 158,136.30 and 49,459.40

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Solution

The fourth proportional to 105,571.40, 158,136.30 and 49,459.40 is: 74,085.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,571.40 : 158,136.30 = 49,459.40 : x
  2. Step 2: Convert to fraction form
    105,571.40/158,136.30 = 49,459.40/x
  3. Step 3: Cross multiply
    105,571.40x = 158,136.30 × 49,459.40
  4. Step 4: Simplify right side
    105,571.40x = 7,821,326,516.22
  5. Step 5: Solve for x
    x = 7,821,326,516.22/105,571.40
  6. Step 6: Final answer
    x = 74,085.66

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1.5x scale

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.