Finding the Fourth Proportional to 128,294.08, 177,038.66 and 70,930.05
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Solution
The fourth proportional to 128,294.08, 177,038.66 and 70,930.05 is: 97,879.51
Step by Step Solution
- Step 1: Write the proportion equation
128,294.08 : 177,038.66 = 70,930.05 : x - Step 2: Convert to fraction form
128,294.08/177,038.66 = 70,930.05/x - Step 3: Cross multiply
128,294.08x = 177,038.66 × 70,930.05 - Step 4: Simplify right side
128,294.08x = 12,557,362,012.93 - Step 5: Solve for x
x = 12,557,362,012.93/128,294.08 - Step 6: Final answer
x = 97,879.51
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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.