Finding the Fourth Proportional to 130,836,613.55, 180,555,720.80 and 72,101,386.08
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Solution
The fourth proportional to 130,836,613.55, 180,555,720.80 and 72,101,386.08 is: 99,500,570.84
Step by Step Solution
- Step 1: Write the proportion equation
130,836,613.55 : 180,555,720.80 = 72,101,386.08 : x - Step 2: Convert to fraction form
130,836,613.55/180,555,720.80 = 72,101,386.08/x - Step 3: Cross multiply
130,836,613.55x = 180,555,720.80 × 72,101,386.08 - Step 4: Simplify right side
130,836,613.55x = 13,018,317,733,992,978 - Step 5: Solve for x
x = 13,018,317,733,992,978/130,836,613.55 - Step 6: Final answer
x = 99,500,570.84
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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.