Home / 106,821.40-160,232.10-81,938.20

Finding the Fourth Proportional to 106,821.40, 160,232.10 and 81,938.20

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Solution

The fourth proportional to 106,821.40, 160,232.10 and 81,938.20 is: 122,907.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,821.40 : 160,232.10 = 81,938.20 : x
  2. Step 2: Convert to fraction form
    106,821.40/160,232.10 = 81,938.20/x
  3. Step 3: Cross multiply
    106,821.40x = 160,232.10 × 81,938.20
  4. Step 4: Simplify right side
    106,821.40x = 13,129,129,856.22
  5. Step 5: Solve for x
    x = 13,129,129,856.22/106,821.40
  6. Step 6: Final answer
    x = 122,907.30

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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.