Finding the Fourth Proportional to 121,030,351.20, 181,545,526.80 and 40,251,319.20
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Solution
The fourth proportional to 121,030,351.20, 181,545,526.80 and 40,251,319.20 is: 60,376,978.80
Step by Step Solution
- Step 1: Write the proportion equation
121,030,351.20 : 181,545,526.80 = 40,251,319.20 : x - Step 2: Convert to fraction form
121,030,351.20/181,545,526.80 = 40,251,319.20/x - Step 3: Cross multiply
121,030,351.20x = 181,545,526.80 × 40,251,319.20 - Step 4: Simplify right side
121,030,351.20x = 7,307,446,948,558,956 - Step 5: Solve for x
x = 7,307,446,948,558,956/121,030,351.20 - Step 6: Final answer
x = 60,376,978.80
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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.