Finding the Fourth Proportional to 163,772,615.70, 245,658,923.55 and 77,679,173.70
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Solution
The fourth proportional to 163,772,615.70, 245,658,923.55 and 77,679,173.70 is: 116,518,760.55
Step by Step Solution
- Step 1: Write the proportion equation
163,772,615.70 : 245,658,923.55 = 77,679,173.70 : x - Step 2: Convert to fraction form
163,772,615.70/245,658,923.55 = 77,679,173.70/x - Step 3: Cross multiply
163,772,615.70x = 245,658,923.55 × 77,679,173.70 - Step 4: Simplify right side
163,772,615.70x = 19,082,582,193,395,472 - Step 5: Solve for x
x = 19,082,582,193,395,472/163,772,615.70 - Step 6: Final answer
x = 116,518,760.55
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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.