Finding the Fourth Proportional to 122,220,742.70, 169,108,756.36 and 106,572,397.80
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Solution
The fourth proportional to 122,220,742.70, 169,108,756.36 and 106,572,397.80 is: 147,457,176.71
Step by Step Solution
- Step 1: Write the proportion equation
122,220,742.70 : 169,108,756.36 = 106,572,397.80 : x - Step 2: Convert to fraction form
122,220,742.70/169,108,756.36 = 106,572,397.80/x - Step 3: Cross multiply
122,220,742.70x = 169,108,756.36 × 106,572,397.80 - Step 4: Simplify right side
122,220,742.70x = 18,022,325,654,261,200 - Step 5: Solve for x
x = 18,022,325,654,261,200/122,220,742.70 - Step 6: Final answer
x = 147,457,176.71
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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.