Finding the Fourth Proportional to 128,911,986.76, 193,238,687.28 and 59,873,274.52
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Solution
The fourth proportional to 128,911,986.76, 193,238,687.28 and 59,873,274.52 is: 89,749,861.61
Step by Step Solution
- Step 1: Write the proportion equation
128,911,986.76 : 193,238,687.28 = 59,873,274.52 : x - Step 2: Convert to fraction form
128,911,986.76/193,238,687.28 = 59,873,274.52/x - Step 3: Cross multiply
128,911,986.76x = 193,238,687.28 × 59,873,274.52 - Step 4: Simplify right side
128,911,986.76x = 11,569,832,971,399,872 - Step 5: Solve for x
x = 11,569,832,971,399,872/128,911,986.76 - Step 6: Final answer
x = 89,749,861.61
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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.