Finding the Fourth Proportional to 138,298,328.12, 190,851,629.79 and 76,418,125.40
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Solution
The fourth proportional to 138,298,328.12, 190,851,629.79 and 76,418,125.40 is: 105,456,978.23
Step by Step Solution
- Step 1: Write the proportion equation
138,298,328.12 : 190,851,629.79 = 76,418,125.40 : x - Step 2: Convert to fraction form
138,298,328.12/190,851,629.79 = 76,418,125.40/x - Step 3: Cross multiply
138,298,328.12x = 190,851,629.79 × 76,418,125.40 - Step 4: Simplify right side
138,298,328.12x = 14,584,523,778,086,596 - Step 5: Solve for x
x = 14,584,523,778,086,596/138,298,328.12 - Step 6: Final answer
x = 105,456,978.23
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.