Finding the Fourth Proportional to 129,378,630.56, 178,544,996.14 and 70,643,623.62
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Solution
The fourth proportional to 129,378,630.56, 178,544,996.14 and 70,643,623.62 is: 97,489,557.99
Step by Step Solution
- Step 1: Write the proportion equation
129,378,630.56 : 178,544,996.14 = 70,643,623.62 : x - Step 2: Convert to fraction form
129,378,630.56/178,544,996.14 = 70,643,623.62/x - Step 3: Cross multiply
129,378,630.56x = 178,544,996.14 × 70,643,623.62 - Step 4: Simplify right side
129,378,630.56x = 12,613,065,506,548,512 - Step 5: Solve for x
x = 12,613,065,506,548,512/129,378,630.56 - Step 6: Final answer
x = 97,489,557.99
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.