Finding the Fourth Proportional to 128,115,858.70, 192,155,125.65 and 37,229,970.70
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Solution
The fourth proportional to 128,115,858.70, 192,155,125.65 and 37,229,970.70 is: 55,839,532.83
Step by Step Solution
- Step 1: Write the proportion equation
128,115,858.70 : 192,155,125.65 = 37,229,970.70 : x - Step 2: Convert to fraction form
128,115,858.70/192,155,125.65 = 37,229,970.70/x - Step 3: Cross multiply
128,115,858.70x = 192,155,125.65 × 37,229,970.70 - Step 4: Simplify right side
128,115,858.70x = 7,153,929,697,804,319 - Step 5: Solve for x
x = 7,153,929,697,804,319/128,115,858.70 - Step 6: Final answer
x = 55,839,532.83
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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.