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Finding the Fourth Proportional to 135,369.84, 186,801.48 and 74,936.28

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Solution

The fourth proportional to 135,369.84, 186,801.48 and 74,936.28 is: 103,407.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,369.84 : 186,801.48 = 74,936.28 : x
  2. Step 2: Convert to fraction form
    135,369.84/186,801.48 = 74,936.28/x
  3. Step 3: Cross multiply
    135,369.84x = 186,801.48 × 74,936.28
  4. Step 4: Simplify right side
    135,369.84x = 13,998,208,009.69
  5. Step 5: Solve for x
    x = 13,998,208,009.69/135,369.84
  6. Step 6: Final answer
    x = 103,407.14

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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.