Finding the Fourth Proportional to 128,985.60, 193,564.80 and 58,828.80
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Solution
The fourth proportional to 128,985.60, 193,564.80 and 58,828.80 is: 88,282.61
Step by Step Solution
- Step 1: Write the proportion equation
128,985.60 : 193,564.80 = 58,828.80 : x - Step 2: Convert to fraction form
128,985.60/193,564.80 = 58,828.80/x - Step 3: Cross multiply
128,985.60x = 193,564.80 × 58,828.80 - Step 4: Simplify right side
128,985.60x = 11,387,184,906.24 - Step 5: Solve for x
x = 11,387,184,906.24/128,985.60 - Step 6: Final answer
x = 88,282.61
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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.