Finding the Fourth Proportional to 122,421.15, 168,937.11 and 68,707.02
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Solution
The fourth proportional to 122,421.15, 168,937.11 and 68,707.02 is: 94,813.40
Step by Step Solution
- Step 1: Write the proportion equation
122,421.15 : 168,937.11 = 68,707.02 : x - Step 2: Convert to fraction form
122,421.15/168,937.11 = 68,707.02/x - Step 3: Cross multiply
122,421.15x = 168,937.11 × 68,707.02 - Step 4: Simplify right side
122,421.15x = 11,607,165,395.51 - Step 5: Solve for x
x = 11,607,165,395.51/122,421.15 - Step 6: Final answer
x = 94,813.40
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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.