Finding the Fourth Proportional to 121,872,969.20, 168,184,679.24 and 69,663,125.88
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Solution
The fourth proportional to 121,872,969.20, 168,184,679.24 and 69,663,125.88 is: 96,135,103.28
Step by Step Solution
- Step 1: Write the proportion equation
121,872,969.20 : 168,184,679.24 = 69,663,125.88 : x - Step 2: Convert to fraction form
121,872,969.20/168,184,679.24 = 69,663,125.88/x - Step 3: Cross multiply
121,872,969.20x = 168,184,679.24 × 69,663,125.88 - Step 4: Simplify right side
121,872,969.20x = 11,716,270,480,983,542 - Step 5: Solve for x
x = 11,716,270,480,983,542/121,872,969.20 - Step 6: Final answer
x = 96,135,103.28
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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.