Finding the Fourth Proportional to 153,605.08, 212,015.10 and 100,037.08
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Solution
The fourth proportional to 153,605.08, 212,015.10 and 100,037.08 is: 138,077.28
Step by Step Solution
- Step 1: Write the proportion equation
153,605.08 : 212,015.10 = 100,037.08 : x - Step 2: Convert to fraction form
153,605.08/212,015.10 = 100,037.08/x - Step 3: Cross multiply
153,605.08x = 212,015.10 × 100,037.08 - Step 4: Simplify right side
153,605.08x = 21,209,371,519.91 - Step 5: Solve for x
x = 21,209,371,519.91/153,605.08 - Step 6: Final answer
x = 138,077.28
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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.