Finding the Fourth Proportional to 157,069.80, 216,745.20 and 93,395.70
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Solution
The fourth proportional to 157,069.80, 216,745.20 and 93,395.70 is: 128,879.45
Step by Step Solution
- Step 1: Write the proportion equation
157,069.80 : 216,745.20 = 93,395.70 : x - Step 2: Convert to fraction form
157,069.80/216,745.20 = 93,395.70/x - Step 3: Cross multiply
157,069.80x = 216,745.20 × 93,395.70 - Step 4: Simplify right side
157,069.80x = 20,243,069,675.64 - Step 5: Solve for x
x = 20,243,069,675.64/157,069.80 - Step 6: Final answer
x = 128,879.45
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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.