Finding the Fourth Proportional to 135,722.64, 187,303.14 and 90,328.08
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Solution
The fourth proportional to 135,722.64, 187,303.14 and 90,328.08 is: 124,656.67
Step by Step Solution
- Step 1: Write the proportion equation
135,722.64 : 187,303.14 = 90,328.08 : x - Step 2: Convert to fraction form
135,722.64/187,303.14 = 90,328.08/x - Step 3: Cross multiply
135,722.64x = 187,303.14 × 90,328.08 - Step 4: Simplify right side
135,722.64x = 16,918,733,014.17 - Step 5: Solve for x
x = 16,918,733,014.17/135,722.64 - Step 6: Final answer
x = 124,656.67
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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.