Finding the Fourth Proportional to 136,641.18, 188,565.11 and 76,210.26
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Solution
The fourth proportional to 136,641.18, 188,565.11 and 76,210.26 is: 105,170.32
Step by Step Solution
- Step 1: Write the proportion equation
136,641.18 : 188,565.11 = 76,210.26 : x - Step 2: Convert to fraction form
136,641.18/188,565.11 = 76,210.26/x - Step 3: Cross multiply
136,641.18x = 188,565.11 × 76,210.26 - Step 4: Simplify right side
136,641.18x = 14,370,596,671.88 - Step 5: Solve for x
x = 14,370,596,671.88/136,641.18 - Step 6: Final answer
x = 105,170.32
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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.