Finding the Fourth Proportional to 130,776,868.12, 180,486,252.68 and 72,045,551.76
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Solution
The fourth proportional to 130,776,868.12, 180,486,252.68 and 72,045,551.76 is: 99,430,670.32
Step by Step Solution
- Step 1: Write the proportion equation
130,776,868.12 : 180,486,252.68 = 72,045,551.76 : x - Step 2: Convert to fraction form
130,776,868.12/180,486,252.68 = 72,045,551.76/x - Step 3: Cross multiply
130,776,868.12x = 180,486,252.68 × 72,045,551.76 - Step 4: Simplify right side
130,776,868.12x = 13,003,231,659,425,380 - Step 5: Solve for x
x = 13,003,231,659,425,380/130,776,868.12 - Step 6: Final answer
x = 99,430,670.32
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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.