Finding the Fourth Proportional to 151,390,718, 208,919,282.36 and 81,776,129.64
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Solution
The fourth proportional to 151,390,718, 208,919,282.36 and 81,776,129.64 is: 112,851,108.34
Step by Step Solution
- Step 1: Write the proportion equation
151,390,718 : 208,919,282.36 = 81,776,129.64 : x - Step 2: Convert to fraction form
151,390,718/208,919,282.36 = 81,776,129.64/x - Step 3: Cross multiply
151,390,718x = 208,919,282.36 × 81,776,129.64 - Step 4: Simplify right side
151,390,718x = 17,084,610,318,567,126 - Step 5: Solve for x
x = 17,084,610,318,567,126/151,390,718 - Step 6: Final answer
x = 112,851,108.34
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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.