Finding the Fourth Proportional to 154,971,750.80, 213,861,008.76 and 85,357,133.84
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Solution
The fourth proportional to 154,971,750.80, 213,861,008.76 and 85,357,133.84 is: 117,792,840.65
Step by Step Solution
- Step 1: Write the proportion equation
154,971,750.80 : 213,861,008.76 = 85,357,133.84 : x - Step 2: Convert to fraction form
154,971,750.80/213,861,008.76 = 85,357,133.84/x - Step 3: Cross multiply
154,971,750.80x = 213,861,008.76 × 85,357,133.84 - Step 4: Simplify right side
154,971,750.80x = 18,254,562,747,884,732 - Step 5: Solve for x
x = 18,254,562,747,884,732/154,971,750.80 - Step 6: Final answer
x = 117,792,840.65
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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.