Home / 138,003.74-190,446.22-76,750.79

Finding the Fourth Proportional to 138,003.74, 190,446.22 and 76,750.79

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Solution

The fourth proportional to 138,003.74, 190,446.22 and 76,750.79 is: 105,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,003.74 : 190,446.22 = 76,750.79 : x
  2. Step 2: Convert to fraction form
    138,003.74/190,446.22 = 76,750.79/x
  3. Step 3: Cross multiply
    138,003.74x = 190,446.22 × 76,750.79
  4. Step 4: Simplify right side
    138,003.74x = 14,616,897,837.51
  5. Step 5: Solve for x
    x = 14,616,897,837.51/138,003.74
  6. Step 6: Final answer
    x = 105,916.68

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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.