Finding the Fourth Proportional to 128,496,960,203.20, 177,327,411,933.84 and 70,631,657,725.75
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Solution
The fourth proportional to 128,496,960,203.20, 177,327,411,933.84 and 70,631,657,725.75 is: 97,472,570,909.83
Step by Step Solution
- Step 1: Write the proportion equation
128,496,960,203.20 : 177,327,411,933.84 = 70,631,657,725.75 : x - Step 2: Convert to fraction form
128,496,960,203.20/177,327,411,933.84 = 70,631,657,725.75/x - Step 3: Cross multiply
128,496,960,203.20x = 177,327,411,933.84 × 70,631,657,725.75 - Step 4: Simplify right side
128,496,960,203.20x = 12,524,929,065,104,061,759,488 - Step 5: Solve for x
x = 12,524,929,065,104,061,759,488/128,496,960,203.20 - Step 6: Final answer
x = 97,472,570,909.83
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1.5x scale
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.