Home / 138,023.62-190,449.27-77,586.22

Finding the Fourth Proportional to 138,023.62, 190,449.27 and 77,586.22

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Solution

The fourth proportional to 138,023.62, 190,449.27 and 77,586.22 is: 107,055.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,023.62 : 190,449.27 = 77,586.22 : x
  2. Step 2: Convert to fraction form
    138,023.62/190,449.27 = 77,586.22/x
  3. Step 3: Cross multiply
    138,023.62x = 190,449.27 × 77,586.22
  4. Step 4: Simplify right side
    138,023.62x = 14,776,238,484.94
  5. Step 5: Solve for x
    x = 14,776,238,484.94/138,023.62
  6. Step 6: Final answer
    x = 107,055.87

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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.