Finding the Fourth Proportional to 129,357,394.16, 178,512,781.20 and 70,620,782
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Solution
The fourth proportional to 129,357,394.16, 178,512,781.20 and 70,620,782 is: 97,456,448.37
Step by Step Solution
- Step 1: Write the proportion equation
129,357,394.16 : 178,512,781.20 = 70,620,782 : x - Step 2: Convert to fraction form
129,357,394.16/178,512,781.20 = 70,620,782/x - Step 3: Cross multiply
129,357,394.16x = 178,512,781.20 × 70,620,782 - Step 4: Simplify right side
129,357,394.16x = 12,606,712,205,338,898 - Step 5: Solve for x
x = 12,606,712,205,338,898/129,357,394.16 - Step 6: Final answer
x = 97,456,448.37
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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.