Finding the Fourth Proportional to 93,289.80, 139,934.70 and 81,625.80
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Solution
The fourth proportional to 93,289.80, 139,934.70 and 81,625.80 is: 122,438.70
Step by Step Solution
- Step 1: Write the proportion equation
93,289.80 : 139,934.70 = 81,625.80 : x - Step 2: Convert to fraction form
93,289.80/139,934.70 = 81,625.80/x - Step 3: Cross multiply
93,289.80x = 139,934.70 × 81,625.80 - Step 4: Simplify right side
93,289.80x = 11,422,281,835.26 - Step 5: Solve for x
x = 11,422,281,835.26/93,289.80 - Step 6: Final answer
x = 122,438.70
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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.