Finding the Fourth Proportional to 134,455.79, 185,542.20 and 74,031.68
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Solution
The fourth proportional to 134,455.79, 185,542.20 and 74,031.68 is: 102,159.98
Step by Step Solution
- Step 1: Write the proportion equation
134,455.79 : 185,542.20 = 74,031.68 : x - Step 2: Convert to fraction form
134,455.79/185,542.20 = 74,031.68/x - Step 3: Cross multiply
134,455.79x = 185,542.20 × 74,031.68 - Step 4: Simplify right side
134,455.79x = 13,735,999,849.19 - Step 5: Solve for x
x = 13,735,999,849.19/134,455.79 - Step 6: Final answer
x = 102,159.98
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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.