Finding the Fourth Proportional to 145,953.63, 201,416.36 and 78,885.63
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Solution
The fourth proportional to 145,953.63, 201,416.36 and 78,885.63 is: 108,862.36
Step by Step Solution
- Step 1: Write the proportion equation
145,953.63 : 201,416.36 = 78,885.63 : x - Step 2: Convert to fraction form
145,953.63/201,416.36 = 78,885.63/x - Step 3: Cross multiply
145,953.63x = 201,416.36 × 78,885.63 - Step 4: Simplify right side
145,953.63x = 15,888,856,056.48 - Step 5: Solve for x
x = 15,888,856,056.48/145,953.63 - Step 6: Final answer
x = 108,862.36
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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.