Finding the Fourth Proportional to 128,901.60, 193,352.40 and 69,852.60
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Solution
The fourth proportional to 128,901.60, 193,352.40 and 69,852.60 is: 104,778.90
Step by Step Solution
- Step 1: Write the proportion equation
128,901.60 : 193,352.40 = 69,852.60 : x - Step 2: Convert to fraction form
128,901.60/193,352.40 = 69,852.60/x - Step 3: Cross multiply
128,901.60x = 193,352.40 × 69,852.60 - Step 4: Simplify right side
128,901.60x = 13,506,167,856.24 - Step 5: Solve for x
x = 13,506,167,856.24/128,901.60 - Step 6: Final answer
x = 104,778.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.