Finding the Fourth Proportional to 149,646.31, 206,547.36 and 86,021.08
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Solution
The fourth proportional to 149,646.31, 206,547.36 and 86,021.08 is: 118,729.47
Step by Step Solution
- Step 1: Write the proportion equation
149,646.31 : 206,547.36 = 86,021.08 : x - Step 2: Convert to fraction form
149,646.31/206,547.36 = 86,021.08/x - Step 3: Cross multiply
149,646.31x = 206,547.36 × 86,021.08 - Step 4: Simplify right side
149,646.31x = 17,767,426,978.35 - Step 5: Solve for x
x = 17,767,426,978.35/149,646.31 - Step 6: Final answer
x = 118,729.47
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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.