Finding the Fourth Proportional to 152,156,923.79, 209,868,309.05 and 139,638,403.68
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Solution
The fourth proportional to 152,156,923.79, 209,868,309.05 and 139,638,403.68 is: 192,601,657.08
Step by Step Solution
- Step 1: Write the proportion equation
152,156,923.79 : 209,868,309.05 = 139,638,403.68 : x - Step 2: Convert to fraction form
152,156,923.79/209,868,309.05 = 139,638,403.68/x - Step 3: Cross multiply
152,156,923.79x = 209,868,309.05 × 139,638,403.68 - Step 4: Simplify right side
152,156,923.79x = 29,305,675,658,233,788 - Step 5: Solve for x
x = 29,305,675,658,233,788/152,156,923.79 - Step 6: Final answer
x = 192,601,657.08
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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.