Finding the Fourth Proportional to 124,781.36, 171,906.36 and 86,988.08
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Solution
The fourth proportional to 124,781.36, 171,906.36 and 86,988.08 is: 119,840.05
Step by Step Solution
- Step 1: Write the proportion equation
124,781.36 : 171,906.36 = 86,988.08 : x - Step 2: Convert to fraction form
124,781.36/171,906.36 = 86,988.08/x - Step 3: Cross multiply
124,781.36x = 171,906.36 × 86,988.08 - Step 4: Simplify right side
124,781.36x = 14,953,804,196.19 - Step 5: Solve for x
x = 14,953,804,196.19/124,781.36 - Step 6: Final answer
x = 119,840.05
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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.