Home / 138,023.43-190,449.02-77,586.03

Finding the Fourth Proportional to 138,023.43, 190,449.02 and 77,586.03

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Solution

The fourth proportional to 138,023.43, 190,449.02 and 77,586.03 is: 107,055.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023.43 : 190,449.02 = 77,586.03 : x
  2. Step 2: Convert to fraction form
    138,023.43/190,449.02 = 77,586.03/x
  3. Step 3: Cross multiply
    138,023.43x = 190,449.02 × 77,586.03
  4. Step 4: Simplify right side
    138,023.43x = 14,776,182,991.26
  5. Step 5: Solve for x
    x = 14,776,182,991.26/138,023.43
  6. Step 6: Final answer
    x = 107,055.61

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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.