Finding the Fourth Proportional to 139,104,963.12, 208,658,164.40 and 81,556,878
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Solution
The fourth proportional to 139,104,963.12, 208,658,164.40 and 81,556,878 is: 122,335,738.97
Step by Step Solution
- Step 1: Write the proportion equation
139,104,963.12 : 208,658,164.40 = 81,556,878 : x - Step 2: Convert to fraction form
139,104,963.12/208,658,164.40 = 81,556,878/x - Step 3: Cross multiply
139,104,963.12x = 208,658,164.40 × 81,556,878 - Step 4: Simplify right side
139,104,963.12x = 17,017,508,457,674,744 - Step 5: Solve for x
x = 17,017,508,457,674,744/139,104,963.12 - Step 6: Final answer
x = 122,335,738.97
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.