Finding the Fourth Proportional to 138,440,455.30, 207,660,682.95 and 57,650,925.70
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Solution
The fourth proportional to 138,440,455.30, 207,660,682.95 and 57,650,925.70 is: 86,476,388.55
Step by Step Solution
- Step 1: Write the proportion equation
138,440,455.30 : 207,660,682.95 = 57,650,925.70 : x - Step 2: Convert to fraction form
138,440,455.30/207,660,682.95 = 57,650,925.70/x - Step 3: Cross multiply
138,440,455.30x = 207,660,682.95 × 57,650,925.70 - Step 4: Simplify right side
138,440,455.30x = 11,971,830,603,561,706 - Step 5: Solve for x
x = 11,971,830,603,561,706/138,440,455.30 - Step 6: Final answer
x = 86,476,388.55
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1.5x scale
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.