Finding the Fourth Proportional to 136,037.54, 187,784.12 and 90,698.99
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Solution
The fourth proportional to 136,037.54, 187,784.12 and 90,698.99 is: 125,199.48
Step by Step Solution
- Step 1: Write the proportion equation
136,037.54 : 187,784.12 = 90,698.99 : x - Step 2: Convert to fraction form
136,037.54/187,784.12 = 90,698.99/x - Step 3: Cross multiply
136,037.54x = 187,784.12 × 90,698.99 - Step 4: Simplify right side
136,037.54x = 17,031,829,309.87 - Step 5: Solve for x
x = 17,031,829,309.87/136,037.54 - Step 6: Final answer
x = 125,199.48
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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.