Finding the Fourth Proportional to 142,270,289.76, 196,224,671.70 and 122,457,774
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Solution
The fourth proportional to 142,270,289.76, 196,224,671.70 and 122,457,774 is: 168,898,485.70
Step by Step Solution
- Step 1: Write the proportion equation
142,270,289.76 : 196,224,671.70 = 122,457,774 : x - Step 2: Convert to fraction form
142,270,289.76/196,224,671.70 = 122,457,774/x - Step 3: Cross multiply
142,270,289.76x = 196,224,671.70 × 122,457,774 - Step 4: Simplify right side
142,270,289.76x = 24,029,236,500,262,796 - Step 5: Solve for x
x = 24,029,236,500,262,796/142,270,289.76 - Step 6: Final answer
x = 168,898,485.70
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1.5x scale
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.