Finding the Fourth Proportional to 124,219.98, 171,447.84 and 78,950.70
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Solution
The fourth proportional to 124,219.98, 171,447.84 and 78,950.70 is: 108,967.39
Step by Step Solution
- Step 1: Write the proportion equation
124,219.98 : 171,447.84 = 78,950.70 : x - Step 2: Convert to fraction form
124,219.98/171,447.84 = 78,950.70/x - Step 3: Cross multiply
124,219.98x = 171,447.84 × 78,950.70 - Step 4: Simplify right side
124,219.98x = 13,535,926,981.49 - Step 5: Solve for x
x = 13,535,926,981.49/124,219.98 - Step 6: Final answer
x = 108,967.39
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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.