Finding the Fourth Proportional to 140,332.74, 193,864.08 and 121,437.06
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Solution
The fourth proportional to 140,332.74, 193,864.08 and 121,437.06 is: 167,760.45
Step by Step Solution
- Step 1: Write the proportion equation
140,332.74 : 193,864.08 = 121,437.06 : x - Step 2: Convert to fraction form
140,332.74/193,864.08 = 121,437.06/x - Step 3: Cross multiply
140,332.74x = 193,864.08 × 121,437.06 - Step 4: Simplify right side
140,332.74x = 23,542,283,914.80 - Step 5: Solve for x
x = 23,542,283,914.80/140,332.74 - Step 6: Final answer
x = 167,760.45
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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.