Finding the Fourth Proportional to 99,370.18, 137,130.75 and 56,928.88
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Solution
The fourth proportional to 99,370.18, 137,130.75 and 56,928.88 is: 78,561.80
Step by Step Solution
- Step 1: Write the proportion equation
99,370.18 : 137,130.75 = 56,928.88 : x - Step 2: Convert to fraction form
99,370.18/137,130.75 = 56,928.88/x - Step 3: Cross multiply
99,370.18x = 137,130.75 × 56,928.88 - Step 4: Simplify right side
99,370.18x = 7,806,700,011.06 - Step 5: Solve for x
x = 7,806,700,011.06/99,370.18 - Step 6: Final answer
x = 78,561.80
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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.