Home / 145,964.53-201,431.05-78,896.53

Finding the Fourth Proportional to 145,964.53, 201,431.05 and 78,896.53

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Solution

The fourth proportional to 145,964.53, 201,431.05 and 78,896.53 is: 108,877.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,964.53 : 201,431.05 = 78,896.53 : x
  2. Step 2: Convert to fraction form
    145,964.53/201,431.05 = 78,896.53/x
  3. Step 3: Cross multiply
    145,964.53x = 201,431.05 × 78,896.53
  4. Step 4: Simplify right side
    145,964.53x = 15,892,211,377.60
  5. Step 5: Solve for x
    x = 15,892,211,377.60/145,964.53
  6. Step 6: Final answer
    x = 108,877.21

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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.