Finding the Fourth Proportional to 125,220,574.70, 187,830,862.05 and 86,956,822.70
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Solution
The fourth proportional to 125,220,574.70, 187,830,862.05 and 86,956,822.70 is: 130,435,234.05
Step by Step Solution
- Step 1: Write the proportion equation
125,220,574.70 : 187,830,862.05 = 86,956,822.70 : x - Step 2: Convert to fraction form
125,220,574.70/187,830,862.05 = 86,956,822.70/x - Step 3: Cross multiply
125,220,574.70x = 187,830,862.05 × 86,956,822.70 - Step 4: Simplify right side
125,220,574.70x = 16,333,174,968,870,010 - Step 5: Solve for x
x = 16,333,174,968,870,010/125,220,574.70 - Step 6: Final answer
x = 130,435,234.05
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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.