Finding the Fourth Proportional to 199,909.23, 275,848.11 and 128,386.14
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Solution
The fourth proportional to 199,909.23, 275,848.11 and 128,386.14 is: 177,155.77
Step by Step Solution
- Step 1: Write the proportion equation
199,909.23 : 275,848.11 = 128,386.14 : x - Step 2: Convert to fraction form
199,909.23/275,848.11 = 128,386.14/x - Step 3: Cross multiply
199,909.23x = 275,848.11 × 128,386.14 - Step 4: Simplify right side
199,909.23x = 35,415,074,069.20 - Step 5: Solve for x
x = 35,415,074,069.20/199,909.23 - Step 6: Final answer
x = 177,155.77
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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.