Finding the Fourth Proportional to 139,530.24, 192,556.80 and 79,925.76
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Solution
The fourth proportional to 139,530.24, 192,556.80 and 79,925.76 is: 110,300.45
Step by Step Solution
- Step 1: Write the proportion equation
139,530.24 : 192,556.80 = 79,925.76 : x - Step 2: Convert to fraction form
139,530.24/192,556.80 = 79,925.76/x - Step 3: Cross multiply
139,530.24x = 192,556.80 × 79,925.76 - Step 4: Simplify right side
139,530.24x = 15,390,248,583.17 - Step 5: Solve for x
x = 15,390,248,583.17/139,530.24 - Step 6: Final answer
x = 110,300.45
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1.5x scale
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.