Finding the Fourth Proportional to 121,830.93, 168,130.18 and 68,116.08
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Solution
The fourth proportional to 121,830.93, 168,130.18 and 68,116.08 is: 94,002.15
Step by Step Solution
- Step 1: Write the proportion equation
121,830.93 : 168,130.18 = 68,116.08 : x - Step 2: Convert to fraction form
121,830.93/168,130.18 = 68,116.08/x - Step 3: Cross multiply
121,830.93x = 168,130.18 × 68,116.08 - Step 4: Simplify right side
121,830.93x = 11,452,369,506.93 - Step 5: Solve for x
x = 11,452,369,506.93/121,830.93 - Step 6: Final answer
x = 94,002.15
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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.