Finding the Fourth Proportional to 138,700,602.05, 191,409,922.17 and 79,160,702.90
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Solution
The fourth proportional to 138,700,602.05, 191,409,922.17 and 79,160,702.90 is: 109,243,534.32
Step by Step Solution
- Step 1: Write the proportion equation
138,700,602.05 : 191,409,922.17 = 79,160,702.90 : x - Step 2: Convert to fraction form
138,700,602.05/191,409,922.17 = 79,160,702.90/x - Step 3: Cross multiply
138,700,602.05x = 191,409,922.17 × 79,160,702.90 - Step 4: Simplify right side
138,700,602.05x = 15,152,143,980,054,442 - Step 5: Solve for x
x = 15,152,143,980,054,442/138,700,602.05 - Step 6: Final answer
x = 109,243,534.32
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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.