Finding the Fourth Proportional to 156,348,403.22, 215,786,661.38 and 86,756,204.26
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Solution
The fourth proportional to 156,348,403.22, 215,786,661.38 and 86,756,204.26 is: 119,737,914.08
Step by Step Solution
- Step 1: Write the proportion equation
156,348,403.22 : 215,786,661.38 = 86,756,204.26 : x - Step 2: Convert to fraction form
156,348,403.22/215,786,661.38 = 86,756,204.26/x - Step 3: Cross multiply
156,348,403.22x = 215,786,661.38 × 86,756,204.26 - Step 4: Simplify right side
156,348,403.22x = 18,720,831,671,266,736 - Step 5: Solve for x
x = 18,720,831,671,266,736/156,348,403.22 - Step 6: Final answer
x = 119,737,914.08
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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.