Finding the Fourth Proportional to 153,687,988.35, 212,088,789.81 and 83,123,677.35
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Solution
The fourth proportional to 153,687,988.35, 212,088,789.81 and 83,123,677.35 is: 114,710,331.78
Step by Step Solution
- Step 1: Write the proportion equation
153,687,988.35 : 212,088,789.81 = 83,123,677.35 : x - Step 2: Convert to fraction form
153,687,988.35/212,088,789.81 = 83,123,677.35/x - Step 3: Cross multiply
153,687,988.35x = 212,088,789.81 × 83,123,677.35 - Step 4: Simplify right side
153,687,988.35x = 17,629,600,133,718,406 - Step 5: Solve for x
x = 17,629,600,133,718,406/153,687,988.35 - Step 6: Final answer
x = 114,710,331.78
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.