Finding the Fourth Proportional to 129,032,844.80, 193,549,267.20 and 74,613,286.40
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Solution
The fourth proportional to 129,032,844.80, 193,549,267.20 and 74,613,286.40 is: 111,919,929.60
Step by Step Solution
- Step 1: Write the proportion equation
129,032,844.80 : 193,549,267.20 = 74,613,286.40 : x - Step 2: Convert to fraction form
129,032,844.80/193,549,267.20 = 74,613,286.40/x - Step 3: Cross multiply
129,032,844.80x = 193,549,267.20 × 74,613,286.40 - Step 4: Simplify right side
129,032,844.80x = 14,441,346,906,103,726 - Step 5: Solve for x
x = 14,441,346,906,103,726/129,032,844.80 - Step 6: Final answer
x = 111,919,929.60
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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.