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Finding the Fourth Proportional to 111,307.60, 166,961.40 and 64,680.40

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Solution

The fourth proportional to 111,307.60, 166,961.40 and 64,680.40 is: 97,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,307.60 : 166,961.40 = 64,680.40 : x
  2. Step 2: Convert to fraction form
    111,307.60/166,961.40 = 64,680.40/x
  3. Step 3: Cross multiply
    111,307.60x = 166,961.40 × 64,680.40
  4. Step 4: Simplify right side
    111,307.60x = 10,799,130,136.56
  5. Step 5: Solve for x
    x = 10,799,130,136.56/111,307.60
  6. Step 6: Final answer
    x = 97,020.60

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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.