Finding the Fourth Proportional to 121,130,519.80, 181,695,779.70 and 70,112,183.80
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Solution
The fourth proportional to 121,130,519.80, 181,695,779.70 and 70,112,183.80 is: 105,168,275.70
Step by Step Solution
- Step 1: Write the proportion equation
121,130,519.80 : 181,695,779.70 = 70,112,183.80 : x - Step 2: Convert to fraction form
121,130,519.80/181,695,779.70 = 70,112,183.80/x - Step 3: Cross multiply
121,130,519.80x = 181,695,779.70 × 70,112,183.80 - Step 4: Simplify right side
121,130,519.80x = 12,739,087,902,010,708 - Step 5: Solve for x
x = 12,739,087,902,010,708/121,130,519.80 - Step 6: Final answer
x = 105,168,275.70
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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.