Finding the Fourth Proportional to 157,211,478.97, 216,952,701.41 and 91,171,132.50
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Solution
The fourth proportional to 157,211,478.97, 216,952,701.41 and 91,171,132.50 is: 125,816,661.84
Step by Step Solution
- Step 1: Write the proportion equation
157,211,478.97 : 216,952,701.41 = 91,171,132.50 : x - Step 2: Convert to fraction form
157,211,478.97/216,952,701.41 = 91,171,132.50/x - Step 3: Cross multiply
157,211,478.97x = 216,952,701.41 × 91,171,132.50 - Step 4: Simplify right side
157,211,478.97x = 19,779,823,487,525,544 - Step 5: Solve for x
x = 19,779,823,487,525,544/157,211,478.97 - Step 6: Final answer
x = 125,816,661.84
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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.