Finding the Fourth Proportional to 158,220.88, 218,345.08 and 86,605.44
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Solution
The fourth proportional to 158,220.88, 218,345.08 and 86,605.44 is: 119,515.65
Step by Step Solution
- Step 1: Write the proportion equation
158,220.88 : 218,345.08 = 86,605.44 : x - Step 2: Convert to fraction form
158,220.88/218,345.08 = 86,605.44/x - Step 3: Cross multiply
158,220.88x = 218,345.08 × 86,605.44 - Step 4: Simplify right side
158,220.88x = 18,909,871,725.24 - Step 5: Solve for x
x = 18,909,871,725.24/158,220.88 - Step 6: Final answer
x = 119,515.65
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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.