Finding the Fourth Proportional to 158,318.07, 218,468.93 and 86,698.95
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Solution
The fourth proportional to 158,318.07, 218,468.93 and 86,698.95 is: 119,639.07
Step by Step Solution
- Step 1: Write the proportion equation
158,318.07 : 218,468.93 = 86,698.95 : x - Step 2: Convert to fraction form
158,318.07/218,468.93 = 86,698.95/x - Step 3: Cross multiply
158,318.07x = 218,468.93 × 86,698.95 - Step 4: Simplify right side
158,318.07x = 18,941,026,405.13 - Step 5: Solve for x
x = 18,941,026,405.13/158,318.07 - Step 6: Final answer
x = 119,639.07
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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.