Finding the Fourth Proportional to 153,577.20, 211,934.04 and 86,509.68
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Solution
The fourth proportional to 153,577.20, 211,934.04 and 86,509.68 is: 119,381.95
Step by Step Solution
- Step 1: Write the proportion equation
153,577.20 : 211,934.04 = 86,509.68 : x - Step 2: Convert to fraction form
153,577.20/211,934.04 = 86,509.68/x - Step 3: Cross multiply
153,577.20x = 211,934.04 × 86,509.68 - Step 4: Simplify right side
153,577.20x = 18,334,345,981.51 - Step 5: Solve for x
x = 18,334,345,981.51/153,577.20 - Step 6: Final answer
x = 119,381.95
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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.