Finding the Fourth Proportional to 153,555.62, 211,898.16 and 84,642.84
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Solution
The fourth proportional to 153,555.62, 211,898.16 and 84,642.84 is: 116,802.38
Step by Step Solution
- Step 1: Write the proportion equation
153,555.62 : 211,898.16 = 84,642.84 : x - Step 2: Convert to fraction form
153,555.62/211,898.16 = 84,642.84/x - Step 3: Cross multiply
153,555.62x = 211,898.16 × 84,642.84 - Step 4: Simplify right side
153,555.62x = 17,935,662,053.17 - Step 5: Solve for x
x = 17,935,662,053.17/153,555.62 - Step 6: Final answer
x = 116,802.38
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1.5x scale
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.