Home / 105,453.40-145,527.78-57,706.60

Finding the Fourth Proportional to 105,453.40, 145,527.78 and 57,706.60

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Solution

The fourth proportional to 105,453.40, 145,527.78 and 57,706.60 is: 79,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,453.40 : 145,527.78 = 57,706.60 : x
  2. Step 2: Convert to fraction form
    105,453.40/145,527.78 = 57,706.60/x
  3. Step 3: Cross multiply
    105,453.40x = 145,527.78 × 57,706.60
  4. Step 4: Simplify right side
    105,453.40x = 8,397,913,389.35
  5. Step 5: Solve for x
    x = 8,397,913,389.35/105,453.40
  6. Step 6: Final answer
    x = 79,636.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.