Finding the Fourth Proportional to 121,746.18, 168,009.36 and 68,031.26
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Solution
The fourth proportional to 121,746.18, 168,009.36 and 68,031.26 is: 93,882.93
Step by Step Solution
- Step 1: Write the proportion equation
121,746.18 : 168,009.36 = 68,031.26 : x - Step 2: Convert to fraction form
121,746.18/168,009.36 = 68,031.26/x - Step 3: Cross multiply
121,746.18x = 168,009.36 × 68,031.26 - Step 4: Simplify right side
121,746.18x = 11,429,888,452.59 - Step 5: Solve for x
x = 11,429,888,452.59/121,746.18 - Step 6: Final answer
x = 93,882.93
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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.