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Finding the Fourth Proportional to 123,858.21, 170,926.57 and 70,154.34

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Solution

The fourth proportional to 123,858.21, 170,926.57 and 70,154.34 is: 96,814.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,858.21 : 170,926.57 = 70,154.34 : x
  2. Step 2: Convert to fraction form
    123,858.21/170,926.57 = 70,154.34/x
  3. Step 3: Cross multiply
    123,858.21x = 170,926.57 × 70,154.34
  4. Step 4: Simplify right side
    123,858.21x = 11,991,240,153.53
  5. Step 5: Solve for x
    x = 11,991,240,153.53/123,858.21
  6. Step 6: Final answer
    x = 96,814.25

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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.