Finding the Fourth Proportional to 120,417.03, 180,347.58 and 86,472.09
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Solution
The fourth proportional to 120,417.03, 180,347.58 and 86,472.09 is: 129,508.53
Step by Step Solution
- Step 1: Write the proportion equation
120,417.03 : 180,347.58 = 86,472.09 : x - Step 2: Convert to fraction form
120,417.03/180,347.58 = 86,472.09/x - Step 3: Cross multiply
120,417.03x = 180,347.58 × 86,472.09 - Step 4: Simplify right side
120,417.03x = 15,595,032,169.04 - Step 5: Solve for x
x = 15,595,032,169.04/120,417.03 - Step 6: Final answer
x = 129,508.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.