Home / 105,255.54-145,254.74-57,511.84

Finding the Fourth Proportional to 105,255.54, 145,254.74 and 57,511.84

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Solution

The fourth proportional to 105,255.54, 145,254.74 and 57,511.84 is: 79,367.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,255.54 : 145,254.74 = 57,511.84 : x
  2. Step 2: Convert to fraction form
    105,255.54/145,254.74 = 57,511.84/x
  3. Step 3: Cross multiply
    105,255.54x = 145,254.74 × 57,511.84
  4. Step 4: Simplify right side
    105,255.54x = 8,353,867,366.12
  5. Step 5: Solve for x
    x = 8,353,867,366.12/105,255.54
  6. Step 6: Final answer
    x = 79,367.48

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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.