Home / 103,640.02-143,037.02-76,858.98

Finding the Fourth Proportional to 103,640.02, 143,037.02 and 76,858.98

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Solution

The fourth proportional to 103,640.02, 143,037.02 and 76,858.98 is: 106,075.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,640.02 : 143,037.02 = 76,858.98 : x
  2. Step 2: Convert to fraction form
    103,640.02/143,037.02 = 76,858.98/x
  3. Step 3: Cross multiply
    103,640.02x = 143,037.02 × 76,858.98
  4. Step 4: Simplify right side
    103,640.02x = 10,993,679,459.44
  5. Step 5: Solve for x
    x = 10,993,679,459.44/103,640.02
  6. Step 6: Final answer
    x = 106,075.62

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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.