Finding the Fourth Proportional to 127,984.74, 176,536.71 and 77,683.74
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Solution
The fourth proportional to 127,984.74, 176,536.71 and 77,683.74 is: 107,153.65
Step by Step Solution
- Step 1: Write the proportion equation
127,984.74 : 176,536.71 = 77,683.74 : x - Step 2: Convert to fraction form
127,984.74/176,536.71 = 77,683.74/x - Step 3: Cross multiply
127,984.74x = 176,536.71 × 77,683.74 - Step 4: Simplify right side
127,984.74x = 13,714,031,880.10 - Step 5: Solve for x
x = 13,714,031,880.10/127,984.74 - Step 6: Final answer
x = 107,153.65
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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.