Finding the Fourth Proportional to 129,357,386.16, 178,512,770.16 and 70,620,774
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Solution
The fourth proportional to 129,357,386.16, 178,512,770.16 and 70,620,774 is: 97,456,437.33
Step by Step Solution
- Step 1: Write the proportion equation
129,357,386.16 : 178,512,770.16 = 70,620,774 : x - Step 2: Convert to fraction form
129,357,386.16/178,512,770.16 = 70,620,774/x - Step 3: Cross multiply
129,357,386.16x = 178,512,770.16 × 70,620,774 - Step 4: Simplify right side
129,357,386.16x = 12,606,709,997,583,304 - Step 5: Solve for x
x = 12,606,709,997,583,304/129,357,386.16 - Step 6: Final answer
x = 97,456,437.33
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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.