Finding the Fourth Proportional to 130,463,921.36, 180,040,326.84 and 71,727,585.68
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Solution
The fourth proportional to 130,463,921.36, 180,040,326.84 and 71,727,585.68 is: 98,984,131.66
Step by Step Solution
- Step 1: Write the proportion equation
130,463,921.36 : 180,040,326.84 = 71,727,585.68 : x - Step 2: Convert to fraction form
130,463,921.36/180,040,326.84 = 71,727,585.68/x - Step 3: Cross multiply
130,463,921.36x = 180,040,326.84 × 71,727,585.68 - Step 4: Simplify right side
130,463,921.36x = 12,913,857,969,271,306 - Step 5: Solve for x
x = 12,913,857,969,271,306/130,463,921.36 - Step 6: Final answer
x = 98,984,131.66
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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.