Finding the Fourth Proportional to 137,885.12, 190,276.44 and 84,259.88
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Solution
The fourth proportional to 137,885.12, 190,276.44 and 84,259.88 is: 116,275.56
Step by Step Solution
- Step 1: Write the proportion equation
137,885.12 : 190,276.44 = 84,259.88 : x - Step 2: Convert to fraction form
137,885.12/190,276.44 = 84,259.88/x - Step 3: Cross multiply
137,885.12x = 190,276.44 × 84,259.88 - Step 4: Simplify right side
137,885.12x = 16,032,670,001.23 - Step 5: Solve for x
x = 16,032,670,001.23/137,885.12 - Step 6: Final answer
x = 116,275.56
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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.