Finding the Fourth Proportional to 119,813.60, 165,395.80 and 77,392.80
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Solution
The fourth proportional to 119,813.60, 165,395.80 and 77,392.80 is: 106,836.32
Step by Step Solution
- Step 1: Write the proportion equation
119,813.60 : 165,395.80 = 77,392.80 : x - Step 2: Convert to fraction form
119,813.60/165,395.80 = 77,392.80/x - Step 3: Cross multiply
119,813.60x = 165,395.80 × 77,392.80 - Step 4: Simplify right side
119,813.60x = 12,800,444,070.24 - Step 5: Solve for x
x = 12,800,444,070.24/119,813.60 - Step 6: Final answer
x = 106,836.32
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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.