Home / 201,821.60-302,769.12-83,428.64

Finding the Fourth Proportional to 201,821.60, 302,769.12 and 83,428.64

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Solution

The fourth proportional to 201,821.60, 302,769.12 and 83,428.64 is: 125,158.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,821.60 : 302,769.12 = 83,428.64 : x
  2. Step 2: Convert to fraction form
    201,821.60/302,769.12 = 83,428.64/x
  3. Step 3: Cross multiply
    201,821.60x = 302,769.12 × 83,428.64
  4. Step 4: Simplify right side
    201,821.60x = 25,259,615,915.60
  5. Step 5: Solve for x
    x = 25,259,615,915.60/201,821.60
  6. Step 6: Final answer
    x = 125,158.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.