Finding the Fourth Proportional to 98,331,291.40, 147,370,965.90 and 87,497,768.20
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Solution
The fourth proportional to 98,331,291.40, 147,370,965.90 and 87,497,768.20 is: 131,134,559.81
Step by Step Solution
- Step 1: Write the proportion equation
98,331,291.40 : 147,370,965.90 = 87,497,768.20 : x - Step 2: Convert to fraction form
98,331,291.40/147,370,965.90 = 87,497,768.20/x - Step 3: Cross multiply
98,331,291.40x = 147,370,965.90 × 87,497,768.20 - Step 4: Simplify right side
98,331,291.40x = 12,894,630,613,728,306 - Step 5: Solve for x
x = 12,894,630,613,728,306/98,331,291.40 - Step 6: Final answer
x = 131,134,559.81
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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.