Finding the Fourth Proportional to 186,438.16, 257,284.56 and 101,555.20
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Solution
The fourth proportional to 186,438.16, 257,284.56 and 101,555.20 is: 140,146.12
Step by Step Solution
- Step 1: Write the proportion equation
186,438.16 : 257,284.56 = 101,555.20 : x - Step 2: Convert to fraction form
186,438.16/257,284.56 = 101,555.20/x - Step 3: Cross multiply
186,438.16x = 257,284.56 × 101,555.20 - Step 4: Simplify right side
186,438.16x = 26,128,584,947.71 - Step 5: Solve for x
x = 26,128,584,947.71/186,438.16 - Step 6: Final answer
x = 140,146.12
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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.