Finding the Fourth Proportional to 145,440,502.20, 218,160,753.30 and 91,020,943.80
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Solution
The fourth proportional to 145,440,502.20, 218,160,753.30 and 91,020,943.80 is: 136,531,415.70
Step by Step Solution
- Step 1: Write the proportion equation
145,440,502.20 : 218,160,753.30 = 91,020,943.80 : x - Step 2: Convert to fraction form
145,440,502.20/218,160,753.30 = 91,020,943.80/x - Step 3: Cross multiply
145,440,502.20x = 218,160,753.30 × 91,020,943.80 - Step 4: Simplify right side
145,440,502.20x = 19,857,197,665,484,964 - Step 5: Solve for x
x = 19,857,197,665,484,964/145,440,502.20 - Step 6: Final answer
x = 136,531,415.70
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.