Finding the Fourth Proportional to 121,129,386.04, 167,159,233.61 and 68,918,421.84
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Solution
The fourth proportional to 121,129,386.04, 167,159,233.61 and 68,918,421.84 is: 95,107,809.53
Step by Step Solution
- Step 1: Write the proportion equation
121,129,386.04 : 167,159,233.61 = 68,918,421.84 : x - Step 2: Convert to fraction form
121,129,386.04/167,159,233.61 = 68,918,421.84/x - Step 3: Cross multiply
121,129,386.04x = 167,159,233.61 × 68,918,421.84 - Step 4: Simplify right side
121,129,386.04x = 11,520,350,576,385,088 - Step 5: Solve for x
x = 11,520,350,576,385,088/121,129,386.04 - Step 6: Final answer
x = 95,107,809.53
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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.