Finding the Fourth Proportional to 128,835.04, 177,758.58 and 74,373.88
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Solution
The fourth proportional to 128,835.04, 177,758.58 and 74,373.88 is: 102,616.46
Step by Step Solution
- Step 1: Write the proportion equation
128,835.04 : 177,758.58 = 74,373.88 : x - Step 2: Convert to fraction form
128,835.04/177,758.58 = 74,373.88/x - Step 3: Cross multiply
128,835.04x = 177,758.58 × 74,373.88 - Step 4: Simplify right side
128,835.04x = 13,220,595,297.89 - Step 5: Solve for x
x = 13,220,595,297.89/128,835.04 - Step 6: Final answer
x = 102,616.46
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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.