Finding the Fourth Proportional to 157,177.40, 216,909.70 and 85,562.19
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Solution
The fourth proportional to 157,177.40, 216,909.70 and 85,562.19 is: 118,078.48
Step by Step Solution
- Step 1: Write the proportion equation
157,177.40 : 216,909.70 = 85,562.19 : x - Step 2: Convert to fraction form
157,177.40/216,909.70 = 85,562.19/x - Step 3: Cross multiply
157,177.40x = 216,909.70 × 85,562.19 - Step 4: Simplify right side
157,177.40x = 18,559,268,964.24 - Step 5: Solve for x
x = 18,559,268,964.24/157,177.40 - Step 6: Final answer
x = 118,078.48
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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.