Finding the Fourth Proportional to 159,457,871.80, 239,186,807.70 and 78,836,303.80
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Solution
The fourth proportional to 159,457,871.80, 239,186,807.70 and 78,836,303.80 is: 118,254,455.70
Step by Step Solution
- Step 1: Write the proportion equation
159,457,871.80 : 239,186,807.70 = 78,836,303.80 : x - Step 2: Convert to fraction form
159,457,871.80/239,186,807.70 = 78,836,303.80/x - Step 3: Cross multiply
159,457,871.80x = 239,186,807.70 × 78,836,303.80 - Step 4: Simplify right side
159,457,871.80x = 18,856,603,836,789,376 - Step 5: Solve for x
x = 18,856,603,836,789,376/159,457,871.80 - Step 6: Final answer
x = 118,254,455.70
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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.