Home / 147,369.12-203,364-86,942.40

Finding the Fourth Proportional to 147,369.12, 203,364 and 86,942.40

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Solution

The fourth proportional to 147,369.12, 203,364 and 86,942.40 is: 119,977.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,369.12 : 203,364 = 86,942.40 : x
  2. Step 2: Convert to fraction form
    147,369.12/203,364 = 86,942.40/x
  3. Step 3: Cross multiply
    147,369.12x = 203,364 × 86,942.40
  4. Step 4: Simplify right side
    147,369.12x = 17,680,954,233.60
  5. Step 5: Solve for x
    x = 17,680,954,233.60/147,369.12
  6. Step 6: Final answer
    x = 119,977.33

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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.