Finding the Fourth Proportional to 141,946.17, 195,885.61 and 78,283.99
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Solution
The fourth proportional to 141,946.17, 195,885.61 and 78,283.99 is: 108,031.85
Step by Step Solution
- Step 1: Write the proportion equation
141,946.17 : 195,885.61 = 78,283.99 : x - Step 2: Convert to fraction form
141,946.17/195,885.61 = 78,283.99/x - Step 3: Cross multiply
141,946.17x = 195,885.61 × 78,283.99 - Step 4: Simplify right side
141,946.17x = 15,334,707,134.38 - Step 5: Solve for x
x = 15,334,707,134.38/141,946.17 - Step 6: Final answer
x = 108,031.85
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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.