Finding the Fourth Proportional to 172,465,701.80, 258,698,552.70 and 86,217,420.20
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Solution
The fourth proportional to 172,465,701.80, 258,698,552.70 and 86,217,420.20 is: 129,326,130.30
Step by Step Solution
- Step 1: Write the proportion equation
172,465,701.80 : 258,698,552.70 = 86,217,420.20 : x - Step 2: Convert to fraction form
172,465,701.80/258,698,552.70 = 86,217,420.20/x - Step 3: Cross multiply
172,465,701.80x = 258,698,552.70 × 86,217,420.20 - Step 4: Simplify right side
172,465,701.80x = 22,304,321,823,267,744 - Step 5: Solve for x
x = 22,304,321,823,267,744/172,465,701.80 - Step 6: Final answer
x = 129,326,130.30
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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.