Home / 138,029.67-190,487.70-77,619.33

Finding the Fourth Proportional to 138,029.67, 190,487.70 and 77,619.33

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Solution

The fourth proportional to 138,029.67, 190,487.70 and 77,619.33 is: 107,118.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,029.67 : 190,487.70 = 77,619.33 : x
  2. Step 2: Convert to fraction form
    138,029.67/190,487.70 = 77,619.33/x
  3. Step 3: Cross multiply
    138,029.67x = 190,487.70 × 77,619.33
  4. Step 4: Simplify right side
    138,029.67x = 14,785,527,647.24
  5. Step 5: Solve for x
    x = 14,785,527,647.24/138,029.67
  6. Step 6: Final answer
    x = 107,118.47

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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.