Finding the Fourth Proportional to 112,959.07, 155,865.68 and 65,203.63
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Solution
The fourth proportional to 112,959.07, 155,865.68 and 65,203.63 is: 89,970.71
Step by Step Solution
- Step 1: Write the proportion equation
112,959.07 : 155,865.68 = 65,203.63 : x - Step 2: Convert to fraction form
112,959.07/155,865.68 = 65,203.63/x - Step 3: Cross multiply
112,959.07x = 155,865.68 × 65,203.63 - Step 4: Simplify right side
112,959.07x = 10,163,007,802.40 - Step 5: Solve for x
x = 10,163,007,802.40/112,959.07 - Step 6: Final answer
x = 89,970.71
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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.