Finding the Fourth Proportional to 157,115.14, 216,817.05 and 103,478.02
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Solution
The fourth proportional to 157,115.14, 216,817.05 and 103,478.02 is: 142,798.45
Step by Step Solution
- Step 1: Write the proportion equation
157,115.14 : 216,817.05 = 103,478.02 : x - Step 2: Convert to fraction form
157,115.14/216,817.05 = 103,478.02/x - Step 3: Cross multiply
157,115.14x = 216,817.05 × 103,478.02 - Step 4: Simplify right side
157,115.14x = 22,435,799,036.24 - Step 5: Solve for x
x = 22,435,799,036.24/157,115.14 - Step 6: Final answer
x = 142,798.45
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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.