Finding the Fourth Proportional to 128,244.66, 176,977.26 and 71,656.08
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Solution
The fourth proportional to 128,244.66, 176,977.26 and 71,656.08 is: 98,885.18
Step by Step Solution
- Step 1: Write the proportion equation
128,244.66 : 176,977.26 = 71,656.08 : x - Step 2: Convert to fraction form
128,244.66/176,977.26 = 71,656.08/x - Step 3: Cross multiply
128,244.66x = 176,977.26 × 71,656.08 - Step 4: Simplify right side
128,244.66x = 12,681,496,700.74 - Step 5: Solve for x
x = 12,681,496,700.74/128,244.66 - Step 6: Final answer
x = 98,885.18
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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.