Finding the Fourth Proportional to 103,276.08, 142,407.15 and 71,389.62
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Solution
The fourth proportional to 103,276.08, 142,407.15 and 71,389.62 is: 98,438.98
Step by Step Solution
- Step 1: Write the proportion equation
103,276.08 : 142,407.15 = 71,389.62 : x - Step 2: Convert to fraction form
103,276.08/142,407.15 = 71,389.62/x - Step 3: Cross multiply
103,276.08x = 142,407.15 × 71,389.62 - Step 4: Simplify right side
103,276.08x = 10,166,392,323.78 - Step 5: Solve for x
x = 10,166,392,323.78/103,276.08 - Step 6: Final answer
x = 98,438.98
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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.