Finding the Fourth Proportional to 99,927.76, 137,908.17 and 56,909.07
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Solution
The fourth proportional to 99,927.76, 137,908.17 and 56,909.07 is: 78,538.99
Step by Step Solution
- Step 1: Write the proportion equation
99,927.76 : 137,908.17 = 56,909.07 : x - Step 2: Convert to fraction form
99,927.76/137,908.17 = 56,909.07/x - Step 3: Cross multiply
99,927.76x = 137,908.17 × 56,909.07 - Step 4: Simplify right side
99,927.76x = 7,848,224,726.02 - Step 5: Solve for x
x = 7,848,224,726.02/99,927.76 - Step 6: Final answer
x = 78,538.99
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1.5x scale
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.