Finding the Fourth Proportional to 144,686.05, 199,226.74 and 128,318.18
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Solution
The fourth proportional to 144,686.05, 199,226.74 and 128,318.18 is: 176,688.85
Step by Step Solution
- Step 1: Write the proportion equation
144,686.05 : 199,226.74 = 128,318.18 : x - Step 2: Convert to fraction form
144,686.05/199,226.74 = 128,318.18/x - Step 3: Cross multiply
144,686.05x = 199,226.74 × 128,318.18 - Step 4: Simplify right side
144,686.05x = 25,564,411,607.80 - Step 5: Solve for x
x = 25,564,411,607.80/144,686.05 - Step 6: Final answer
x = 176,688.85
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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.