Finding the Fourth Proportional to 130,821.05, 180,534.93 and 73,472.78
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Solution
The fourth proportional to 130,821.05, 180,534.93 and 73,472.78 is: 101,393.49
Step by Step Solution
- Step 1: Write the proportion equation
130,821.05 : 180,534.93 = 73,472.78 : x - Step 2: Convert to fraction form
130,821.05/180,534.93 = 73,472.78/x - Step 3: Cross multiply
130,821.05x = 180,534.93 × 73,472.78 - Step 4: Simplify right side
130,821.05x = 13,264,402,291.53 - Step 5: Solve for x
x = 13,264,402,291.53/130,821.05 - Step 6: Final answer
x = 101,393.49
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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.