Finding the Fourth Proportional to 135,432,931.87, 186,908,972.70 and 76,706,044.17
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Solution
The fourth proportional to 135,432,931.87, 186,908,972.70 and 76,706,044.17 is: 105,860,869.41
Step by Step Solution
- Step 1: Write the proportion equation
135,432,931.87 : 186,908,972.70 = 76,706,044.17 : x - Step 2: Convert to fraction form
135,432,931.87/186,908,972.70 = 76,706,044.17/x - Step 3: Cross multiply
135,432,931.87x = 186,908,972.70 × 76,706,044.17 - Step 4: Simplify right side
135,432,931.87x = 14,337,047,914,760,980 - Step 5: Solve for x
x = 14,337,047,914,760,980/135,432,931.87 - Step 6: Final answer
x = 105,860,869.41
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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.