Finding the Fourth Proportional to 102,358.28, 141,252.99 and 57,038.18
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Solution
The fourth proportional to 102,358.28, 141,252.99 and 57,038.18 is: 78,711.88
Step by Step Solution
- Step 1: Write the proportion equation
102,358.28 : 141,252.99 = 57,038.18 : x - Step 2: Convert to fraction form
102,358.28/141,252.99 = 57,038.18/x - Step 3: Cross multiply
102,358.28x = 141,252.99 × 57,038.18 - Step 4: Simplify right side
102,358.28x = 8,056,812,549.00 - Step 5: Solve for x
x = 8,056,812,549.00/102,358.28 - Step 6: Final answer
x = 78,711.88
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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.