Home / 115,428.40-173,106.60-45,329.20

Finding the Fourth Proportional to 115,428.40, 173,106.60 and 45,329.20

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Solution

The fourth proportional to 115,428.40, 173,106.60 and 45,329.20 is: 67,979.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,428.40 : 173,106.60 = 45,329.20 : x
  2. Step 2: Convert to fraction form
    115,428.40/173,106.60 = 45,329.20/x
  3. Step 3: Cross multiply
    115,428.40x = 173,106.60 × 45,329.20
  4. Step 4: Simplify right side
    115,428.40x = 7,846,783,692.72
  5. Step 5: Solve for x
    x = 7,846,783,692.72/115,428.40
  6. Step 6: Final answer
    x = 67,979.66

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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.