Finding the Fourth Proportional to 157,042,451.55, 216,714,359.24 and 87,427,830.99
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Solution
The fourth proportional to 157,042,451.55, 216,714,359.24 and 87,427,830.99 is: 120,648,055.26
Step by Step Solution
- Step 1: Write the proportion equation
157,042,451.55 : 216,714,359.24 = 87,427,830.99 : x - Step 2: Convert to fraction form
157,042,451.55/216,714,359.24 = 87,427,830.99/x - Step 3: Cross multiply
157,042,451.55x = 216,714,359.24 × 87,427,830.99 - Step 4: Simplify right side
157,042,451.55x = 18,946,866,372,303,724 - Step 5: Solve for x
x = 18,946,866,372,303,724/157,042,451.55 - Step 6: Final answer
x = 120,648,055.26
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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.