Finding the Fourth Proportional to 153,470.60, 211,822.09 and 103,140.44
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Solution
The fourth proportional to 153,470.60, 211,822.09 and 103,140.44 is: 142,355.75
Step by Step Solution
- Step 1: Write the proportion equation
153,470.60 : 211,822.09 = 103,140.44 : x - Step 2: Convert to fraction form
153,470.60/211,822.09 = 103,140.44/x - Step 3: Cross multiply
153,470.60x = 211,822.09 × 103,140.44 - Step 4: Simplify right side
153,470.60x = 21,847,423,048.62 - Step 5: Solve for x
x = 21,847,423,048.62/153,470.60 - Step 6: Final answer
x = 142,355.75
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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.