Finding the Fourth Proportional to 128,602.08, 177,472.89 and 74,124.18
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Solution
The fourth proportional to 128,602.08, 177,472.89 and 74,124.18 is: 102,292.53
Step by Step Solution
- Step 1: Write the proportion equation
128,602.08 : 177,472.89 = 74,124.18 : x - Step 2: Convert to fraction form
128,602.08/177,472.89 = 74,124.18/x - Step 3: Cross multiply
128,602.08x = 177,472.89 × 74,124.18 - Step 4: Simplify right side
128,602.08x = 13,155,032,443.48 - Step 5: Solve for x
x = 13,155,032,443.48/128,602.08 - Step 6: Final answer
x = 102,292.53
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1.5x scale
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.