Finding the Fourth Proportional to 153,201.08, 211,415.40 and 86,133.08
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Solution
The fourth proportional to 153,201.08, 211,415.40 and 86,133.08 is: 118,862.48
Step by Step Solution
- Step 1: Write the proportion equation
153,201.08 : 211,415.40 = 86,133.08 : x - Step 2: Convert to fraction form
153,201.08/211,415.40 = 86,133.08/x - Step 3: Cross multiply
153,201.08x = 211,415.40 × 86,133.08 - Step 4: Simplify right side
153,201.08x = 18,209,859,561.43 - Step 5: Solve for x
x = 18,209,859,561.43/153,201.08 - Step 6: Final answer
x = 118,862.48
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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.