Finding the Fourth Proportional to 121,701.90, 167,946.84 and 67,987.68
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Solution
The fourth proportional to 121,701.90, 167,946.84 and 67,987.68 is: 93,822.00
Step by Step Solution
- Step 1: Write the proportion equation
121,701.90 : 167,946.84 = 67,987.68 : x - Step 2: Convert to fraction form
121,701.90/167,946.84 = 67,987.68/x - Step 3: Cross multiply
121,701.90x = 167,946.84 × 67,987.68 - Step 4: Simplify right side
121,701.90x = 11,418,316,014.93 - Step 5: Solve for x
x = 11,418,316,014.93/121,701.90 - Step 6: Final answer
x = 93,822.00
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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.