Finding the Fourth Proportional to 138,574,433.40, 207,637,701.30 and 87,364,807.80
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Solution
The fourth proportional to 138,574,433.40, 207,637,701.30 and 87,364,807.80 is: 130,906,022.28
Step by Step Solution
- Step 1: Write the proportion equation
138,574,433.40 : 207,637,701.30 = 87,364,807.80 : x - Step 2: Convert to fraction form
138,574,433.40/207,637,701.30 = 87,364,807.80/x - Step 3: Cross multiply
138,574,433.40x = 207,637,701.30 × 87,364,807.80 - Step 4: Simplify right side
138,574,433.40x = 18,140,227,866,108,312 - Step 5: Solve for x
x = 18,140,227,866,108,312/138,574,433.40 - Step 6: Final answer
x = 130,906,022.28
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.