Finding the Fourth Proportional to 128,125.95, 190,873.51 and 122,368.74
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Solution
The fourth proportional to 128,125.95, 190,873.51 and 122,368.74 is: 182,296.80
Step by Step Solution
- Step 1: Write the proportion equation
128,125.95 : 190,873.51 = 122,368.74 : x - Step 2: Convert to fraction form
128,125.95/190,873.51 = 122,368.74/x - Step 3: Cross multiply
128,125.95x = 190,873.51 × 122,368.74 - Step 4: Simplify right side
128,125.95x = 23,356,950,918.08 - Step 5: Solve for x
x = 23,356,950,918.08/128,125.95 - Step 6: Final answer
x = 182,296.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.