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Finding the Fourth Proportional to 201,810.60, 302,715.90 and 83,712.60

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Solution

The fourth proportional to 201,810.60, 302,715.90 and 83,712.60 is: 125,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,810.60 : 302,715.90 = 83,712.60 : x
  2. Step 2: Convert to fraction form
    201,810.60/302,715.90 = 83,712.60/x
  3. Step 3: Cross multiply
    201,810.60x = 302,715.90 × 83,712.60
  4. Step 4: Simplify right side
    201,810.60x = 25,341,135,050.34
  5. Step 5: Solve for x
    x = 25,341,135,050.34/201,810.60
  6. Step 6: Final answer
    x = 125,568.90

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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.