Finding the Fourth Proportional to 117,617,510.12, 162,288,378.18 and 68,715,490.28
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Solution
The fourth proportional to 117,617,510.12, 162,288,378.18 and 68,715,490.28 is: 94,813,480.25
Step by Step Solution
- Step 1: Write the proportion equation
117,617,510.12 : 162,288,378.18 = 68,715,490.28 : x - Step 2: Convert to fraction form
117,617,510.12/162,288,378.18 = 68,715,490.28/x - Step 3: Cross multiply
117,617,510.12x = 162,288,378.18 × 68,715,490.28 - Step 4: Simplify right side
117,617,510.12x = 11,151,725,473,384,754 - Step 5: Solve for x
x = 11,151,725,473,384,754/117,617,510.12 - Step 6: Final answer
x = 94,813,480.25
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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.