Finding the Fourth Proportional to 155,389,724.11, 214,437,071.60 and 85,774,496.05
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Solution
The fourth proportional to 155,389,724.11, 214,437,071.60 and 85,774,496.05 is: 118,368,391.84
Step by Step Solution
- Step 1: Write the proportion equation
155,389,724.11 : 214,437,071.60 = 85,774,496.05 : x - Step 2: Convert to fraction form
155,389,724.11/214,437,071.60 = 85,774,496.05/x - Step 3: Cross multiply
155,389,724.11x = 214,437,071.60 × 85,774,496.05 - Step 4: Simplify right side
155,389,724.11x = 18,393,231,750,927,768 - Step 5: Solve for x
x = 18,393,231,750,927,768/155,389,724.11 - Step 6: Final answer
x = 118,368,391.84
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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.