Finding the Fourth Proportional to 130,711.08, 195,980.58 and 86,202.12
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Solution
The fourth proportional to 130,711.08, 195,980.58 and 86,202.12 is: 129,246.44
Step by Step Solution
- Step 1: Write the proportion equation
130,711.08 : 195,980.58 = 86,202.12 : x - Step 2: Convert to fraction form
130,711.08/195,980.58 = 86,202.12/x - Step 3: Cross multiply
130,711.08x = 195,980.58 × 86,202.12 - Step 4: Simplify right side
130,711.08x = 16,893,941,474.83 - Step 5: Solve for x
x = 16,893,941,474.83/130,711.08 - Step 6: Final answer
x = 129,246.44
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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.