Finding the Fourth Proportional to 139,721,079.36, 208,599,209.04 and 106,759,140.24
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Solution
The fourth proportional to 139,721,079.36, 208,599,209.04 and 106,759,140.24 is: 159,388,063.09
Step by Step Solution
- Step 1: Write the proportion equation
139,721,079.36 : 208,599,209.04 = 106,759,140.24 : x - Step 2: Convert to fraction form
139,721,079.36/208,599,209.04 = 106,759,140.24/x - Step 3: Cross multiply
139,721,079.36x = 208,599,209.04 × 106,759,140.24 - Step 4: Simplify right side
139,721,079.36x = 22,269,872,211,854,432 - Step 5: Solve for x
x = 22,269,872,211,854,432/139,721,079.36 - Step 6: Final answer
x = 159,388,063.09
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.