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Finding the Fourth Proportional to 113,918.40, 170,877.60 and 82,425.60

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Solution

The fourth proportional to 113,918.40, 170,877.60 and 82,425.60 is: 123,638.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,918.40 : 170,877.60 = 82,425.60 : x
  2. Step 2: Convert to fraction form
    113,918.40/170,877.60 = 82,425.60/x
  3. Step 3: Cross multiply
    113,918.40x = 170,877.60 × 82,425.60
  4. Step 4: Simplify right side
    113,918.40x = 14,084,688,706.56
  5. Step 5: Solve for x
    x = 14,084,688,706.56/113,918.40
  6. Step 6: Final answer
    x = 123,638.40

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1.5x scale

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.