Finding the Fourth Proportional to 124,780.36, 171,904.98 and 86,987.08
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Solution
The fourth proportional to 124,780.36, 171,904.98 and 86,987.08 is: 119,838.67
Step by Step Solution
- Step 1: Write the proportion equation
124,780.36 : 171,904.98 = 86,987.08 : x - Step 2: Convert to fraction form
124,780.36/171,904.98 = 86,987.08/x - Step 3: Cross multiply
124,780.36x = 171,904.98 × 86,987.08 - Step 4: Simplify right side
124,780.36x = 14,953,512,247.66 - Step 5: Solve for x
x = 14,953,512,247.66/124,780.36 - Step 6: Final answer
x = 119,838.67
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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.