Finding the Fourth Proportional to 140,146,386.44, 193,373,963.68 and 78,257,202.44
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Solution
The fourth proportional to 140,146,386.44, 193,373,963.68 and 78,257,202.44 is: 107,979,276.57
Step by Step Solution
- Step 1: Write the proportion equation
140,146,386.44 : 193,373,963.68 = 78,257,202.44 : x - Step 2: Convert to fraction form
140,146,386.44/193,373,963.68 = 78,257,202.44/x - Step 3: Cross multiply
140,146,386.44x = 193,373,963.68 × 78,257,202.44 - Step 4: Simplify right side
140,146,386.44x = 15,132,905,422,330,968 - Step 5: Solve for x
x = 15,132,905,422,330,968/140,146,386.44 - Step 6: Final answer
x = 107,979,276.57
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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.