Finding the Fourth Proportional to 138,452,823.32, 191,123,726.99 and 86,267,642.63
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Solution
The fourth proportional to 138,452,823.32, 191,123,726.99 and 86,267,642.63 is: 119,086,003.32
Step by Step Solution
- Step 1: Write the proportion equation
138,452,823.32 : 191,123,726.99 = 86,267,642.63 : x - Step 2: Convert to fraction form
138,452,823.32/191,123,726.99 = 86,267,642.63/x - Step 3: Cross multiply
138,452,823.32x = 191,123,726.99 × 86,267,642.63 - Step 4: Simplify right side
138,452,823.32x = 16,487,793,376,700,050 - Step 5: Solve for x
x = 16,487,793,376,700,050/138,452,823.32 - Step 6: Final answer
x = 119,086,003.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.