Finding the Fourth Proportional to 156,845,316.81, 216,445,340.87 and 86,279,408.05
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Solution
The fourth proportional to 156,845,316.81, 216,445,340.87 and 86,279,408.05 is: 119,064,925.02
Step by Step Solution
- Step 1: Write the proportion equation
156,845,316.81 : 216,445,340.87 = 86,279,408.05 : x - Step 2: Convert to fraction form
156,845,316.81/216,445,340.87 = 86,279,408.05/x - Step 3: Cross multiply
156,845,316.81x = 216,445,340.87 × 86,279,408.05 - Step 4: Simplify right side
156,845,316.81x = 18,674,775,885,012,676 - Step 5: Solve for x
x = 18,674,775,885,012,676/156,845,316.81 - Step 6: Final answer
x = 119,064,925.02
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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.