Finding the Fourth Proportional to 136,142,391.79, 187,877,699.73 and 74,263,005.55
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Solution
The fourth proportional to 136,142,391.79, 187,877,699.73 and 74,263,005.55 is: 102,483,601.72
Step by Step Solution
- Step 1: Write the proportion equation
136,142,391.79 : 187,877,699.73 = 74,263,005.55 : x - Step 2: Convert to fraction form
136,142,391.79/187,877,699.73 = 74,263,005.55/x - Step 3: Cross multiply
136,142,391.79x = 187,877,699.73 × 74,263,005.55 - Step 4: Simplify right side
136,142,391.79x = 13,952,362,656,459,520 - Step 5: Solve for x
x = 13,952,362,656,459,520/136,142,391.79 - Step 6: Final answer
x = 102,483,601.72
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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.