Finding the Fourth Proportional to 125,220,575.70, 187,830,863.55 and 86,956,823.70
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Solution
The fourth proportional to 125,220,575.70, 187,830,863.55 and 86,956,823.70 is: 130,435,235.55
Step by Step Solution
- Step 1: Write the proportion equation
125,220,575.70 : 187,830,863.55 = 86,956,823.70 : x - Step 2: Convert to fraction form
125,220,575.70/187,830,863.55 = 86,956,823.70/x - Step 3: Cross multiply
125,220,575.70x = 187,830,863.55 × 86,956,823.70 - Step 4: Simplify right side
125,220,575.70x = 16,333,175,287,136,108 - Step 5: Solve for x
x = 16,333,175,287,136,108/125,220,575.70 - Step 6: Final answer
x = 130,435,235.55
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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.