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Finding the Fourth Proportional to 135,742.81, 187,335.35 and 75,324.88

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Solution

The fourth proportional to 135,742.81, 187,335.35 and 75,324.88 is: 103,954.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,742.81 : 187,335.35 = 75,324.88 : x
  2. Step 2: Convert to fraction form
    135,742.81/187,335.35 = 75,324.88/x
  3. Step 3: Cross multiply
    135,742.81x = 187,335.35 × 75,324.88
  4. Step 4: Simplify right side
    135,742.81x = 14,111,012,758.51
  5. Step 5: Solve for x
    x = 14,111,012,758.51/135,742.81
  6. Step 6: Final answer
    x = 103,954.04

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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.