Home / 147,156.40-220,561.78-68,103.64

Finding the Fourth Proportional to 147,156.40, 220,561.78 and 68,103.64

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Solution

The fourth proportional to 147,156.40, 220,561.78 and 68,103.64 is: 102,075.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,156.40 : 220,561.78 = 68,103.64 : x
  2. Step 2: Convert to fraction form
    147,156.40/220,561.78 = 68,103.64/x
  3. Step 3: Cross multiply
    147,156.40x = 220,561.78 × 68,103.64
  4. Step 4: Simplify right side
    147,156.40x = 15,021,060,062.88
  5. Step 5: Solve for x
    x = 15,021,060,062.88/147,156.40
  6. Step 6: Final answer
    x = 102,075.48

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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.