Finding the Fourth Proportional to 99,251.56, 136,973.28 and 56,809.12
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Solution
The fourth proportional to 99,251.56, 136,973.28 and 56,809.12 is: 78,400.09
Step by Step Solution
- Step 1: Write the proportion equation
99,251.56 : 136,973.28 = 56,809.12 : x - Step 2: Convert to fraction form
99,251.56/136,973.28 = 56,809.12/x - Step 3: Cross multiply
99,251.56x = 136,973.28 × 56,809.12 - Step 4: Simplify right side
99,251.56x = 7,781,331,500.31 - Step 5: Solve for x
x = 7,781,331,500.31/99,251.56 - Step 6: Final answer
x = 78,400.09
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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.