Finding the Fourth Proportional to 128,884,489.88, 177,864,502.14 and 70,151,402.03
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Solution
The fourth proportional to 128,884,489.88, 177,864,502.14 and 70,151,402.03 is: 96,811,060.88
Step by Step Solution
- Step 1: Write the proportion equation
128,884,489.88 : 177,864,502.14 = 70,151,402.03 : x - Step 2: Convert to fraction form
128,884,489.88/177,864,502.14 = 70,151,402.03/x - Step 3: Cross multiply
128,884,489.88x = 177,864,502.14 × 70,151,402.03 - Step 4: Simplify right side
128,884,489.88x = 12,477,444,195,599,612 - Step 5: Solve for x
x = 12,477,444,195,599,612/128,884,489.88 - Step 6: Final answer
x = 96,811,060.88
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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.