Home / 138,405.20-190,998.29-77,995.24

Finding the Fourth Proportional to 138,405.20, 190,998.29 and 77,995.24

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Solution

The fourth proportional to 138,405.20, 190,998.29 and 77,995.24 is: 107,632.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,405.20 : 190,998.29 = 77,995.24 : x
  2. Step 2: Convert to fraction form
    138,405.20/190,998.29 = 77,995.24/x
  3. Step 3: Cross multiply
    138,405.20x = 190,998.29 × 77,995.24
  4. Step 4: Simplify right side
    138,405.20x = 14,896,957,185.63
  5. Step 5: Solve for x
    x = 14,896,957,185.63/138,405.20
  6. Step 6: Final answer
    x = 107,632.93

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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.