Finding the Fourth Proportional to 128,159,053.56, 176,860,343.10 and 69,421,718.04
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Solution
The fourth proportional to 128,159,053.56, 176,860,343.10 and 69,421,718.04 is: 95,802,430.89
Step by Step Solution
- Step 1: Write the proportion equation
128,159,053.56 : 176,860,343.10 = 69,421,718.04 : x - Step 2: Convert to fraction form
128,159,053.56/176,860,343.10 = 69,421,718.04/x - Step 3: Cross multiply
128,159,053.56x = 176,860,343.10 × 69,421,718.04 - Step 4: Simplify right side
128,159,053.56x = 12,277,948,871,145,860 - Step 5: Solve for x
x = 12,277,948,871,145,860/128,159,053.56 - Step 6: Final answer
x = 95,802,430.89
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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.