Finding the Fourth Proportional to 159,128,847.80, 238,693,271.70 and 120,865,095.80
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Solution
The fourth proportional to 159,128,847.80, 238,693,271.70 and 120,865,095.80 is: 181,297,643.70
Step by Step Solution
- Step 1: Write the proportion equation
159,128,847.80 : 238,693,271.70 = 120,865,095.80 : x - Step 2: Convert to fraction form
159,128,847.80/238,693,271.70 = 120,865,095.80/x - Step 3: Cross multiply
159,128,847.80x = 238,693,271.70 × 120,865,095.80 - Step 4: Simplify right side
159,128,847.80x = 28,849,685,150,835,928 - Step 5: Solve for x
x = 28,849,685,150,835,928/159,128,847.80 - Step 6: Final answer
x = 181,297,643.70
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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.