Finding the Fourth Proportional to 147,947.60, 221,812.05 and 81,462.80
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Solution
The fourth proportional to 147,947.60, 221,812.05 and 81,462.80 is: 122,133.99
Step by Step Solution
- Step 1: Write the proportion equation
147,947.60 : 221,812.05 = 81,462.80 : x - Step 2: Convert to fraction form
147,947.60/221,812.05 = 81,462.80/x - Step 3: Cross multiply
147,947.60x = 221,812.05 × 81,462.80 - Step 4: Simplify right side
147,947.60x = 18,069,430,666.74 - Step 5: Solve for x
x = 18,069,430,666.74/147,947.60 - Step 6: Final answer
x = 122,133.99
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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.