Finding the Fourth Proportional to 124,712.88, 171,980.82 and 76,956.09
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Solution
The fourth proportional to 124,712.88, 171,980.82 and 76,956.09 is: 106,123.53
Step by Step Solution
- Step 1: Write the proportion equation
124,712.88 : 171,980.82 = 76,956.09 : x - Step 2: Convert to fraction form
124,712.88/171,980.82 = 76,956.09/x - Step 3: Cross multiply
124,712.88x = 171,980.82 × 76,956.09 - Step 4: Simplify right side
124,712.88x = 13,234,971,462.19 - Step 5: Solve for x
x = 13,234,971,462.19/124,712.88 - Step 6: Final answer
x = 106,123.53
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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.