Finding the Fourth Proportional to 125,130.74, 172,683.75 and 70,678.58
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Solution
The fourth proportional to 125,130.74, 172,683.75 and 70,678.58 is: 97,538.32
Step by Step Solution
- Step 1: Write the proportion equation
125,130.74 : 172,683.75 = 70,678.58 : x - Step 2: Convert to fraction form
125,130.74/172,683.75 = 70,678.58/x - Step 3: Cross multiply
125,130.74x = 172,683.75 × 70,678.58 - Step 4: Simplify right side
125,130.74x = 12,205,042,239.08 - Step 5: Solve for x
x = 12,205,042,239.08/125,130.74 - Step 6: Final answer
x = 97,538.32
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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.