Home / 138,918.42-191,708.34-75,256.18

Finding the Fourth Proportional to 138,918.42, 191,708.34 and 75,256.18

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Solution

The fourth proportional to 138,918.42, 191,708.34 and 75,256.18 is: 103,854.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.42 : 191,708.34 = 75,256.18 : x
  2. Step 2: Convert to fraction form
    138,918.42/191,708.34 = 75,256.18/x
  3. Step 3: Cross multiply
    138,918.42x = 191,708.34 × 75,256.18
  4. Step 4: Simplify right side
    138,918.42x = 14,427,237,342.54
  5. Step 5: Solve for x
    x = 14,427,237,342.54/138,918.42
  6. Step 6: Final answer
    x = 103,854.03

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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.