Home / 127,865.80-191,856.30-61,280.20

Finding the Fourth Proportional to 127,865.80, 191,856.30 and 61,280.20

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Solution

The fourth proportional to 127,865.80, 191,856.30 and 61,280.20 is: 91,947.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,865.80 : 191,856.30 = 61,280.20 : x
  2. Step 2: Convert to fraction form
    127,865.80/191,856.30 = 61,280.20/x
  3. Step 3: Cross multiply
    127,865.80x = 191,856.30 × 61,280.20
  4. Step 4: Simplify right side
    127,865.80x = 11,756,992,435.26
  5. Step 5: Solve for x
    x = 11,756,992,435.26/127,865.80
  6. Step 6: Final answer
    x = 91,947.91

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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.