Finding the Fourth Proportional to 130,478,743.40, 195,718,115.10 and 87,480,573.80
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Solution
The fourth proportional to 130,478,743.40, 195,718,115.10 and 87,480,573.80 is: 131,220,860.70
Step by Step Solution
- Step 1: Write the proportion equation
130,478,743.40 : 195,718,115.10 = 87,480,573.80 : x - Step 2: Convert to fraction form
130,478,743.40/195,718,115.10 = 87,480,573.80/x - Step 3: Cross multiply
130,478,743.40x = 195,718,115.10 × 87,480,573.80 - Step 4: Simplify right side
130,478,743.40x = 17,121,533,012,002,444 - Step 5: Solve for x
x = 17,121,533,012,002,444/130,478,743.40 - Step 6: Final answer
x = 131,220,860.70
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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.