Finding the Fourth Proportional to 106,985.40, 160,478.10 and 73,807.80
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Solution
The fourth proportional to 106,985.40, 160,478.10 and 73,807.80 is: 110,711.70
Step by Step Solution
- Step 1: Write the proportion equation
106,985.40 : 160,478.10 = 73,807.80 : x - Step 2: Convert to fraction form
106,985.40/160,478.10 = 73,807.80/x - Step 3: Cross multiply
106,985.40x = 160,478.10 × 73,807.80 - Step 4: Simplify right side
106,985.40x = 11,844,535,509.18 - Step 5: Solve for x
x = 11,844,535,509.18/106,985.40 - Step 6: Final answer
x = 110,711.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.