Finding the Fourth Proportional to 128,926,816.40, 193,334,237.40 and 42,631,878.80
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Solution
The fourth proportional to 128,926,816.40, 193,334,237.40 and 42,631,878.80 is: 63,929,305.07
Step by Step Solution
- Step 1: Write the proportion equation
128,926,816.40 : 193,334,237.40 = 42,631,878.80 : x - Step 2: Convert to fraction form
128,926,816.40/193,334,237.40 = 42,631,878.80/x - Step 3: Cross multiply
128,926,816.40x = 193,334,237.40 × 42,631,878.80 - Step 4: Simplify right side
128,926,816.40x = 8,242,201,776,727,227 - Step 5: Solve for x
x = 8,242,201,776,727,227/128,926,816.40 - Step 6: Final answer
x = 63,929,305.07
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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.