Finding the Fourth Proportional to 128,312.40, 192,468.60 and 97,208.40
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Solution
The fourth proportional to 128,312.40, 192,468.60 and 97,208.40 is: 145,812.60
Step by Step Solution
- Step 1: Write the proportion equation
128,312.40 : 192,468.60 = 97,208.40 : x - Step 2: Convert to fraction form
128,312.40/192,468.60 = 97,208.40/x - Step 3: Cross multiply
128,312.40x = 192,468.60 × 97,208.40 - Step 4: Simplify right side
128,312.40x = 18,709,564,656.24 - Step 5: Solve for x
x = 18,709,564,656.24/128,312.40 - Step 6: Final answer
x = 145,812.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.