Finding the Fourth Proportional to 129,102,126.75, 178,164,668.80 and 70,368,596.03
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Solution
The fourth proportional to 129,102,126.75, 178,164,668.80 and 70,368,596.03 is: 97,110,697.72
Step by Step Solution
- Step 1: Write the proportion equation
129,102,126.75 : 178,164,668.80 = 70,368,596.03 : x - Step 2: Convert to fraction form
129,102,126.75/178,164,668.80 = 70,368,596.03/x - Step 3: Cross multiply
129,102,126.75x = 178,164,668.80 × 70,368,596.03 - Step 4: Simplify right side
129,102,126.75x = 12,537,197,605,605,946 - Step 5: Solve for x
x = 12,537,197,605,605,946/129,102,126.75 - Step 6: Final answer
x = 97,110,697.72
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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.