Finding the Fourth Proportional to 128,680,208.40, 193,048,306.20 and 42,403,933.20
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Solution
The fourth proportional to 128,680,208.40, 193,048,306.20 and 42,403,933.20 is: 63,615,124.52
Step by Step Solution
- Step 1: Write the proportion equation
128,680,208.40 : 193,048,306.20 = 42,403,933.20 : x - Step 2: Convert to fraction form
128,680,208.40/193,048,306.20 = 42,403,933.20/x - Step 3: Cross multiply
128,680,208.40x = 193,048,306.20 × 42,403,933.20 - Step 4: Simplify right side
128,680,208.40x = 8,186,007,480,477,946 - Step 5: Solve for x
x = 8,186,007,480,477,946/128,680,208.40 - Step 6: Final answer
x = 63,615,124.52
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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.