Finding the Fourth Proportional to 129,331,534.87, 178,450,875.16 and 74,316,762.55
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Solution
The fourth proportional to 129,331,534.87, 178,450,875.16 and 74,316,762.55 is: 102,541,822.68
Step by Step Solution
- Step 1: Write the proportion equation
129,331,534.87 : 178,450,875.16 = 74,316,762.55 : x - Step 2: Convert to fraction form
129,331,534.87/178,450,875.16 = 74,316,762.55/x - Step 3: Cross multiply
129,331,534.87x = 178,450,875.16 × 74,316,762.55 - Step 4: Simplify right side
129,331,534.87x = 13,261,891,316,105,412 - Step 5: Solve for x
x = 13,261,891,316,105,412/129,331,534.87 - Step 6: Final answer
x = 102,541,822.68
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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.