Home / 138,014.68-190,461.06-77,584.80

Finding the Fourth Proportional to 138,014.68, 190,461.06 and 77,584.80

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Solution

The fourth proportional to 138,014.68, 190,461.06 and 77,584.80 is: 107,067.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,014.68 : 190,461.06 = 77,584.80 : x
  2. Step 2: Convert to fraction form
    138,014.68/190,461.06 = 77,584.80/x
  3. Step 3: Cross multiply
    138,014.68x = 190,461.06 × 77,584.80
  4. Step 4: Simplify right side
    138,014.68x = 14,776,883,247.89
  5. Step 5: Solve for x
    x = 14,776,883,247.89/138,014.68
  6. Step 6: Final answer
    x = 107,067.47

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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.