Finding the Fourth Proportional to 130,378,610.40, 195,567,915.60 and 39,506,719.20
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Solution
The fourth proportional to 130,378,610.40, 195,567,915.60 and 39,506,719.20 is: 59,260,078.80
Step by Step Solution
- Step 1: Write the proportion equation
130,378,610.40 : 195,567,915.60 = 39,506,719.20 : x - Step 2: Convert to fraction form
130,378,610.40/195,567,915.60 = 39,506,719.20/x - Step 3: Cross multiply
130,378,610.40x = 195,567,915.60 × 39,506,719.20 - Step 4: Simplify right side
130,378,610.40x = 7,726,246,726,138,500 - Step 5: Solve for x
x = 7,726,246,726,138,500/130,378,610.40 - Step 6: Final answer
x = 59,260,078.80
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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.