Finding the Fourth Proportional to 121,872,947.21, 168,184,648.88 and 69,663,103.88
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Solution
The fourth proportional to 121,872,947.21, 168,184,648.88 and 69,663,103.88 is: 96,135,072.91
Step by Step Solution
- Step 1: Write the proportion equation
121,872,947.21 : 168,184,648.88 = 69,663,103.88 : x - Step 2: Convert to fraction form
121,872,947.21/168,184,648.88 = 69,663,103.88/x - Step 3: Cross multiply
121,872,947.21x = 168,184,648.88 × 69,663,103.88 - Step 4: Simplify right side
121,872,947.21x = 11,716,264,666,546,878 - Step 5: Solve for x
x = 11,716,264,666,546,878/121,872,947.21 - Step 6: Final answer
x = 96,135,072.91
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.