Finding the Fourth Proportional to 135,742.03, 202,510.84 and 128,393.71
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Solution
The fourth proportional to 135,742.03, 202,510.84 and 128,393.71 is: 191,548.03
Step by Step Solution
- Step 1: Write the proportion equation
135,742.03 : 202,510.84 = 128,393.71 : x - Step 2: Convert to fraction form
135,742.03/202,510.84 = 128,393.71/x - Step 3: Cross multiply
135,742.03x = 202,510.84 × 128,393.71 - Step 4: Simplify right side
135,742.03x = 26,001,118,062.82 - Step 5: Solve for x
x = 26,001,118,062.82/135,742.03 - Step 6: Final answer
x = 191,548.03
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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.