Home / 127,780.36-191,698.74-39,040.80

Finding the Fourth Proportional to 127,780.36, 191,698.74 and 39,040.80

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Solution

The fourth proportional to 127,780.36, 191,698.74 and 39,040.80 is: 58,569.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,780.36 : 191,698.74 = 39,040.80 : x
  2. Step 2: Convert to fraction form
    127,780.36/191,698.74 = 39,040.80/x
  3. Step 3: Cross multiply
    127,780.36x = 191,698.74 × 39,040.80
  4. Step 4: Simplify right side
    127,780.36x = 7,484,072,168.59
  5. Step 5: Solve for x
    x = 7,484,072,168.59/127,780.36
  6. Step 6: Final answer
    x = 58,569.82

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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.