Home / 134,869.79-186,194.88-81,168

Finding the Fourth Proportional to 134,869.79, 186,194.88 and 81,168

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Solution

The fourth proportional to 134,869.79, 186,194.88 and 81,168 is: 112,056.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,869.79 : 186,194.88 = 81,168 : x
  2. Step 2: Convert to fraction form
    134,869.79/186,194.88 = 81,168/x
  3. Step 3: Cross multiply
    134,869.79x = 186,194.88 × 81,168
  4. Step 4: Simplify right side
    134,869.79x = 15,113,066,019.84
  5. Step 5: Solve for x
    x = 15,113,066,019.84/134,869.79
  6. Step 6: Final answer
    x = 112,056.72

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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.