Finding the Fourth Proportional to 142,776.25, 197,031.16 and 85,417.99
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Solution
The fourth proportional to 142,776.25, 197,031.16 and 85,417.99 is: 117,876.79
Step by Step Solution
- Step 1: Write the proportion equation
142,776.25 : 197,031.16 = 85,417.99 : x - Step 2: Convert to fraction form
142,776.25/197,031.16 = 85,417.99/x - Step 3: Cross multiply
142,776.25x = 197,031.16 × 85,417.99 - Step 4: Simplify right side
142,776.25x = 16,830,005,720.06 - Step 5: Solve for x
x = 16,830,005,720.06/142,776.25 - Step 6: Final answer
x = 117,876.79
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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.