Finding the Fourth Proportional to 139,623,386.40, 209,435,079.60 and 124,557,034.05
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Solution
The fourth proportional to 139,623,386.40, 209,435,079.60 and 124,557,034.05 is: 186,835,551.08
Step by Step Solution
- Step 1: Write the proportion equation
139,623,386.40 : 209,435,079.60 = 124,557,034.05 : x - Step 2: Convert to fraction form
139,623,386.40/209,435,079.60 = 124,557,034.05/x - Step 3: Cross multiply
139,623,386.40x = 209,435,079.60 × 124,557,034.05 - Step 4: Simplify right side
139,623,386.40x = 26,086,612,341,001,660 - Step 5: Solve for x
x = 26,086,612,341,001,660/139,623,386.40 - Step 6: Final answer
x = 186,835,551.08
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.