Finding the Fourth Proportional to 117,716.19, 162,366.07 and 77,417.07
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Solution
The fourth proportional to 117,716.19, 162,366.07 and 77,417.07 is: 106,781.45
Step by Step Solution
- Step 1: Write the proportion equation
117,716.19 : 162,366.07 = 77,417.07 : x - Step 2: Convert to fraction form
117,716.19/162,366.07 = 77,417.07/x - Step 3: Cross multiply
117,716.19x = 162,366.07 × 77,417.07 - Step 4: Simplify right side
117,716.19x = 12,569,905,406.81 - Step 5: Solve for x
x = 12,569,905,406.81/117,716.19 - Step 6: Final answer
x = 106,781.45
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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.