Finding the Fourth Proportional to 138,238,645.83, 207,356,548.51 and 79,909,209.12
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Solution
The fourth proportional to 138,238,645.83, 207,356,548.51 and 79,909,209.12 is: 119,862,992.71
Step by Step Solution
- Step 1: Write the proportion equation
138,238,645.83 : 207,356,548.51 = 79,909,209.12 : x - Step 2: Convert to fraction form
138,238,645.83/207,356,548.51 = 79,909,209.12/x - Step 3: Cross multiply
138,238,645.83x = 207,356,548.51 × 79,909,209.12 - Step 4: Simplify right side
138,238,645.83x = 16,569,697,797,287,014 - Step 5: Solve for x
x = 16,569,697,797,287,014/138,238,645.83 - Step 6: Final answer
x = 119,862,992.71
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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.