Finding the Fourth Proportional to 153,797,696.76, 212,242,145.10 and 87,721,541.96
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Solution
The fourth proportional to 153,797,696.76, 212,242,145.10 and 87,721,541.96 is: 121,056,482.83
Step by Step Solution
- Step 1: Write the proportion equation
153,797,696.76 : 212,242,145.10 = 87,721,541.96 : x - Step 2: Convert to fraction form
153,797,696.76/212,242,145.10 = 87,721,541.96/x - Step 3: Cross multiply
153,797,696.76x = 212,242,145.10 × 87,721,541.96 - Step 4: Simplify right side
153,797,696.76x = 18,618,208,237,070,056 - Step 5: Solve for x
x = 18,618,208,237,070,056/153,797,696.76 - Step 6: Final answer
x = 121,056,482.83
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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.