Finding the Fourth Proportional to 121,430,782.76, 167,574,700.68 and 66,426,639.28
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Solution
The fourth proportional to 121,430,782.76, 167,574,700.68 and 66,426,639.28 is: 91,668,882.81
Step by Step Solution
- Step 1: Write the proportion equation
121,430,782.76 : 167,574,700.68 = 66,426,639.28 : x - Step 2: Convert to fraction form
121,430,782.76/167,574,700.68 = 66,426,639.28/x - Step 3: Cross multiply
121,430,782.76x = 167,574,700.68 × 66,426,639.28 - Step 4: Simplify right side
121,430,782.76x = 11,131,424,194,524,332 - Step 5: Solve for x
x = 11,131,424,194,524,332/121,430,782.76 - Step 6: Final answer
x = 91,668,882.81
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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.