Finding the Fourth Proportional to 127,931.20, 176,589.12 and 76,972.48
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Solution
The fourth proportional to 127,931.20, 176,589.12 and 76,972.48 is: 106,248.53
Step by Step Solution
- Step 1: Write the proportion equation
127,931.20 : 176,589.12 = 76,972.48 : x - Step 2: Convert to fraction form
127,931.20/176,589.12 = 76,972.48/x - Step 3: Cross multiply
127,931.20x = 176,589.12 × 76,972.48 - Step 4: Simplify right side
127,931.20x = 13,592,502,507.42 - Step 5: Solve for x
x = 13,592,502,507.42/127,931.20 - Step 6: Final answer
x = 106,248.53
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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.