Finding the Fourth Proportional to 153,494.40, 211,822.08 and 86,426.88
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Solution
The fourth proportional to 153,494.40, 211,822.08 and 86,426.88 is: 119,268.99
Step by Step Solution
- Step 1: Write the proportion equation
153,494.40 : 211,822.08 = 86,426.88 : x - Step 2: Convert to fraction form
153,494.40/211,822.08 = 86,426.88/x - Step 3: Cross multiply
153,494.40x = 211,822.08 × 86,426.88 - Step 4: Simplify right side
153,494.40x = 18,307,121,489.51 - Step 5: Solve for x
x = 18,307,121,489.51/153,494.40 - Step 6: Final answer
x = 119,268.99
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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.