Finding the Fourth Proportional to 138,583,888.32, 191,243,446.08 and 76,702,902.08
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Solution
The fourth proportional to 138,583,888.32, 191,243,446.08 and 76,702,902.08 is: 105,848,720.92
Step by Step Solution
- Step 1: Write the proportion equation
138,583,888.32 : 191,243,446.08 = 76,702,902.08 : x - Step 2: Convert to fraction form
138,583,888.32/191,243,446.08 = 76,702,902.08/x - Step 3: Cross multiply
138,583,888.32x = 191,243,446.08 × 76,702,902.08 - Step 4: Simplify right side
138,583,888.32x = 14,668,927,318,116,000 - Step 5: Solve for x
x = 14,668,927,318,116,000/138,583,888.32 - Step 6: Final answer
x = 105,848,720.92
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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.