Finding the Fourth Proportional to 139,159.10, 208,707.66 and 39,328.62
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Solution
The fourth proportional to 139,159.10, 208,707.66 and 39,328.62 is: 58,984.17
Step by Step Solution
- Step 1: Write the proportion equation
139,159.10 : 208,707.66 = 39,328.62 : x - Step 2: Convert to fraction form
139,159.10/208,707.66 = 39,328.62/x - Step 3: Cross multiply
139,159.10x = 208,707.66 × 39,328.62 - Step 4: Simplify right side
139,159.10x = 8,208,184,251.23 - Step 5: Solve for x
x = 8,208,184,251.23/139,159.10 - Step 6: Final answer
x = 58,984.17
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1.5x scale
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.