Finding the Fourth Proportional to 99,640,830.24, 137,382,183.20 and 81,937,867.14
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Solution
The fourth proportional to 99,640,830.24, 137,382,183.20 and 81,937,867.14 is: 112,973,798.46
Step by Step Solution
- Step 1: Write the proportion equation
99,640,830.24 : 137,382,183.20 = 81,937,867.14 : x - Step 2: Convert to fraction form
99,640,830.24/137,382,183.20 = 81,937,867.14/x - Step 3: Cross multiply
99,640,830.24x = 137,382,183.20 × 81,937,867.14 - Step 4: Simplify right side
99,640,830.24x = 11,256,803,074,550,232 - Step 5: Solve for x
x = 11,256,803,074,550,232/99,640,830.24 - Step 6: Final answer
x = 112,973,798.46
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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.