Finding the Fourth Proportional to 105,190,962.99, 157,786,445.12 and 28,513,990.91
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Solution
The fourth proportional to 105,190,962.99, 157,786,445.12 and 28,513,990.91 is: 42,770,986.54
Step by Step Solution
- Step 1: Write the proportion equation
105,190,962.99 : 157,786,445.12 = 28,513,990.91 : x - Step 2: Convert to fraction form
105,190,962.99/157,786,445.12 = 28,513,990.91/x - Step 3: Cross multiply
105,190,962.99x = 157,786,445.12 × 28,513,990.91 - Step 4: Simplify right side
105,190,962.99x = 4,499,121,261,872,894 - Step 5: Solve for x
x = 4,499,121,261,872,894/105,190,962.99 - Step 6: Final answer
x = 42,770,986.54
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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.