Finding the Fourth Proportional to 155,563,382.41, 214,686,077.07 and 85,947,268.63
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Solution
The fourth proportional to 155,563,382.41, 214,686,077.07 and 85,947,268.63 is: 118,611,987.29
Step by Step Solution
- Step 1: Write the proportion equation
155,563,382.41 : 214,686,077.07 = 85,947,268.63 : x - Step 2: Convert to fraction form
155,563,382.41/214,686,077.07 = 85,947,268.63/x - Step 3: Cross multiply
155,563,382.41x = 214,686,077.07 × 85,947,268.63 - Step 4: Simplify right side
155,563,382.41x = 18,451,681,937,056,172 - Step 5: Solve for x
x = 18,451,681,937,056,172/155,563,382.41 - Step 6: Final answer
x = 118,611,987.29
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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.