Finding the Fourth Proportional to 115,513,639.20, 173,270,458.80 and 74,698,970.40
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Solution
The fourth proportional to 115,513,639.20, 173,270,458.80 and 74,698,970.40 is: 112,048,455.60
Step by Step Solution
- Step 1: Write the proportion equation
115,513,639.20 : 173,270,458.80 = 74,698,970.40 : x - Step 2: Convert to fraction form
115,513,639.20/173,270,458.80 = 74,698,970.40/x - Step 3: Cross multiply
115,513,639.20x = 173,270,458.80 × 74,698,970.40 - Step 4: Simplify right side
115,513,639.20x = 12,943,124,873,095,622 - Step 5: Solve for x
x = 12,943,124,873,095,622/115,513,639.20 - Step 6: Final answer
x = 112,048,455.60
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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.