Finding the Fourth Proportional to 151,390,743.41, 208,919,317.44 and 81,776,155.05
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Solution
The fourth proportional to 151,390,743.41, 208,919,317.44 and 81,776,155.05 is: 112,851,143.42
Step by Step Solution
- Step 1: Write the proportion equation
151,390,743.41 : 208,919,317.44 = 81,776,155.05 : x - Step 2: Convert to fraction form
151,390,743.41/208,919,317.44 = 81,776,155.05/x - Step 3: Cross multiply
151,390,743.41x = 208,919,317.44 × 81,776,155.05 - Step 4: Simplify right side
151,390,743.41x = 17,084,618,495,913,608 - Step 5: Solve for x
x = 17,084,618,495,913,608/151,390,743.41 - Step 6: Final answer
x = 112,851,143.42
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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.