Finding the Fourth Proportional to 137,072,781.35, 189,163,004.58 and 84,122,948.45
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Solution
The fourth proportional to 137,072,781.35, 189,163,004.58 and 84,122,948.45 is: 116,091,243.83
Step by Step Solution
- Step 1: Write the proportion equation
137,072,781.35 : 189,163,004.58 = 84,122,948.45 : x - Step 2: Convert to fraction form
137,072,781.35/189,163,004.58 = 84,122,948.45/x - Step 3: Cross multiply
137,072,781.35x = 189,163,004.58 × 84,122,948.45 - Step 4: Simplify right side
137,072,781.35x = 15,912,949,681,984,638 - Step 5: Solve for x
x = 15,912,949,681,984,638/137,072,781.35 - Step 6: Final answer
x = 116,091,243.83
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.