Home / 103,977.40-155,966.10-79,401.40

Finding the Fourth Proportional to 103,977.40, 155,966.10 and 79,401.40

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Solution

The fourth proportional to 103,977.40, 155,966.10 and 79,401.40 is: 119,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,977.40 : 155,966.10 = 79,401.40 : x
  2. Step 2: Convert to fraction form
    103,977.40/155,966.10 = 79,401.40/x
  3. Step 3: Cross multiply
    103,977.40x = 155,966.10 × 79,401.40
  4. Step 4: Simplify right side
    103,977.40x = 12,383,926,692.54
  5. Step 5: Solve for x
    x = 12,383,926,692.54/103,977.40
  6. Step 6: Final answer
    x = 119,102.10

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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.