Finding the Fourth Proportional to 127,854,806.40, 176,428,964.16 and 72,097,102.08
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Solution
The fourth proportional to 127,854,806.40, 176,428,964.16 and 72,097,102.08 is: 99,487,984.82
Step by Step Solution
- Step 1: Write the proportion equation
127,854,806.40 : 176,428,964.16 = 72,097,102.08 : x - Step 2: Convert to fraction form
127,854,806.40/176,428,964.16 = 72,097,102.08/x - Step 3: Cross multiply
127,854,806.40x = 176,428,964.16 × 72,097,102.08 - Step 4: Simplify right side
127,854,806.40x = 12,720,017,038,912,180 - Step 5: Solve for x
x = 12,720,017,038,912,180/127,854,806.40 - Step 6: Final answer
x = 99,487,984.82
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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.