Finding the Fourth Proportional to 157,895.64, 217,897.14 and 86,275.62
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Solution
The fourth proportional to 157,895.64, 217,897.14 and 86,275.62 is: 119,060.99
Step by Step Solution
- Step 1: Write the proportion equation
157,895.64 : 217,897.14 = 86,275.62 : x - Step 2: Convert to fraction form
157,895.64/217,897.14 = 86,275.62/x - Step 3: Cross multiply
157,895.64x = 217,897.14 × 86,275.62 - Step 4: Simplify right side
157,895.64x = 18,799,210,849.73 - Step 5: Solve for x
x = 18,799,210,849.73/157,895.64 - Step 6: Final answer
x = 119,060.99
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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.