Finding the Fourth Proportional to 122,906,971.84, 169,609,641.69 and 67,151,194.26
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Solution
The fourth proportional to 122,906,971.84, 169,609,641.69 and 67,151,194.26 is: 92,667,566.59
Step by Step Solution
- Step 1: Write the proportion equation
122,906,971.84 : 169,609,641.69 = 67,151,194.26 : x - Step 2: Convert to fraction form
122,906,971.84/169,609,641.69 = 67,151,194.26/x - Step 3: Cross multiply
122,906,971.84x = 169,609,641.69 × 67,151,194.26 - Step 4: Simplify right side
122,906,971.84x = 11,389,489,997,109,964 - Step 5: Solve for x
x = 11,389,489,997,109,964/122,906,971.84 - Step 6: Final answer
x = 92,667,566.59
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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.