Home / 105,257.93-145,255.73-57,511.62

Finding the Fourth Proportional to 105,257.93, 145,255.73 and 57,511.62

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Solution

The fourth proportional to 105,257.93, 145,255.73 and 57,511.62 is: 79,365.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,257.93 : 145,255.73 = 57,511.62 : x
  2. Step 2: Convert to fraction form
    105,257.93/145,255.73 = 57,511.62/x
  3. Step 3: Cross multiply
    105,257.93x = 145,255.73 × 57,511.62
  4. Step 4: Simplify right side
    105,257.93x = 8,353,892,059.02
  5. Step 5: Solve for x
    x = 8,353,892,059.02/105,257.93
  6. Step 6: Final answer
    x = 79,365.92

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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.