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Finding the Fourth Proportional to 123,814.56, 170,860.96 and 70,099.20

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Solution

The fourth proportional to 123,814.56, 170,860.96 and 70,099.20 is: 96,735.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,814.56 : 170,860.96 = 70,099.20 : x
  2. Step 2: Convert to fraction form
    123,814.56/170,860.96 = 70,099.20/x
  3. Step 3: Cross multiply
    123,814.56x = 170,860.96 × 70,099.20
  4. Step 4: Simplify right side
    123,814.56x = 11,977,216,607.23
  5. Step 5: Solve for x
    x = 11,977,216,607.23/123,814.56
  6. Step 6: Final answer
    x = 96,735.12

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1.5x scale

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.