Finding the Fourth Proportional to 128,461,761.48, 177,276,783.74 and 69,724,426.41
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Solution
The fourth proportional to 128,461,761.48, 177,276,783.74 and 69,724,426.41 is: 96,219,465.77
Step by Step Solution
- Step 1: Write the proportion equation
128,461,761.48 : 177,276,783.74 = 69,724,426.41 : x - Step 2: Convert to fraction form
128,461,761.48/177,276,783.74 = 69,724,426.41/x - Step 3: Cross multiply
128,461,761.48x = 177,276,783.74 × 69,724,426.41 - Step 4: Simplify right side
128,461,761.48x = 12,360,522,061,732,492 - Step 5: Solve for x
x = 12,360,522,061,732,492/128,461,761.48 - Step 6: Final answer
x = 96,219,465.77
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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.