Finding the Fourth Proportional to 122,486.90, 183,730.35 and 39,389.30
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Solution
The fourth proportional to 122,486.90, 183,730.35 and 39,389.30 is: 59,083.95
Step by Step Solution
- Step 1: Write the proportion equation
122,486.90 : 183,730.35 = 39,389.30 : x - Step 2: Convert to fraction form
122,486.90/183,730.35 = 39,389.30/x - Step 3: Cross multiply
122,486.90x = 183,730.35 × 39,389.30 - Step 4: Simplify right side
122,486.90x = 7,237,009,875.26 - Step 5: Solve for x
x = 7,237,009,875.26/122,486.90 - Step 6: Final answer
x = 59,083.95
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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.