Finding the Fourth Proportional to 90,791,246.40, 136,186,869.60 and 83,776,225.20
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Solution
The fourth proportional to 90,791,246.40, 136,186,869.60 and 83,776,225.20 is: 125,664,337.80
Step by Step Solution
- Step 1: Write the proportion equation
90,791,246.40 : 136,186,869.60 = 83,776,225.20 : x - Step 2: Convert to fraction form
90,791,246.40/136,186,869.60 = 83,776,225.20/x - Step 3: Cross multiply
90,791,246.40x = 136,186,869.60 × 83,776,225.20 - Step 4: Simplify right side
90,791,246.40x = 11,409,221,856,892,634 - Step 5: Solve for x
x = 11,409,221,856,892,634/90,791,246.40 - Step 6: Final answer
x = 125,664,337.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.