Finding the Fourth Proportional to 172,462,340.80, 258,693,511.20 and 86,214,059.20
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Solution
The fourth proportional to 172,462,340.80, 258,693,511.20 and 86,214,059.20 is: 129,321,088.80
Step by Step Solution
- Step 1: Write the proportion equation
172,462,340.80 : 258,693,511.20 = 86,214,059.20 : x - Step 2: Convert to fraction form
172,462,340.80/258,693,511.20 = 86,214,059.20/x - Step 3: Cross multiply
172,462,340.80x = 258,693,511.20 × 86,214,059.20 - Step 4: Simplify right side
172,462,340.80x = 22,303,017,689,252,664 - Step 5: Solve for x
x = 22,303,017,689,252,664/172,462,340.80 - Step 6: Final answer
x = 129,321,088.80
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1.5x scale
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.