Finding the Fourth Proportional to 121,872,974.20, 168,184,686.14 and 69,663,130.88
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Solution
The fourth proportional to 121,872,974.20, 168,184,686.14 and 69,663,130.88 is: 96,135,110.18
Step by Step Solution
- Step 1: Write the proportion equation
121,872,974.20 : 168,184,686.14 = 69,663,130.88 : x - Step 2: Convert to fraction form
121,872,974.20/168,184,686.14 = 69,663,130.88/x - Step 3: Cross multiply
121,872,974.20x = 168,184,686.14 × 69,663,130.88 - Step 4: Simplify right side
121,872,974.20x = 11,716,271,802,582,540 - Step 5: Solve for x
x = 11,716,271,802,582,540/121,872,974.20 - Step 6: Final answer
x = 96,135,110.18
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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.