Finding the Fourth Proportional to 155,277.16, 214,290.08 and 87,315.53
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Solution
The fourth proportional to 155,277.16, 214,290.08 and 87,315.53 is: 120,499.70
Step by Step Solution
- Step 1: Write the proportion equation
155,277.16 : 214,290.08 = 87,315.53 : x - Step 2: Convert to fraction form
155,277.16/214,290.08 = 87,315.53/x - Step 3: Cross multiply
155,277.16x = 214,290.08 × 87,315.53 - Step 4: Simplify right side
155,277.16x = 18,710,851,908.94 - Step 5: Solve for x
x = 18,710,851,908.94/155,277.16 - Step 6: Final answer
x = 120,499.70
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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.