Finding the Fourth Proportional to 128,457,566.69, 177,241,057.88 and 72,702,985.86
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Solution
The fourth proportional to 128,457,566.69, 177,241,057.88 and 72,702,985.86 is: 100,312,924.00
Step by Step Solution
- Step 1: Write the proportion equation
128,457,566.69 : 177,241,057.88 = 72,702,985.86 : x - Step 2: Convert to fraction form
128,457,566.69/177,241,057.88 = 72,702,985.86/x - Step 3: Cross multiply
128,457,566.69x = 177,241,057.88 × 72,702,985.86 - Step 4: Simplify right side
128,457,566.69x = 12,885,954,124,497,566 - Step 5: Solve for x
x = 12,885,954,124,497,566/128,457,566.69 - Step 6: Final answer
x = 100,312,924.00
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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.