Finding the Fourth Proportional to 128,539.84, 177,339.36 and 83,750.08
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Solution
The fourth proportional to 128,539.84, 177,339.36 and 83,750.08 is: 115,545.39
Step by Step Solution
- Step 1: Write the proportion equation
128,539.84 : 177,339.36 = 83,750.08 : x - Step 2: Convert to fraction form
128,539.84/177,339.36 = 83,750.08/x - Step 3: Cross multiply
128,539.84x = 177,339.36 × 83,750.08 - Step 4: Simplify right side
128,539.84x = 14,852,185,587.15 - Step 5: Solve for x
x = 14,852,185,587.15/128,539.84 - Step 6: Final answer
x = 115,545.39
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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.