Finding the Fourth Proportional to 161,988.74, 243,011.93 and 55,384.53
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Solution
The fourth proportional to 161,988.74, 243,011.93 and 55,384.53 is: 83,086.65
Step by Step Solution
- Step 1: Write the proportion equation
161,988.74 : 243,011.93 = 55,384.53 : x - Step 2: Convert to fraction form
161,988.74/243,011.93 = 55,384.53/x - Step 3: Cross multiply
161,988.74x = 243,011.93 × 55,384.53 - Step 4: Simplify right side
161,988.74x = 13,459,101,250.52 - Step 5: Solve for x
x = 13,459,101,250.52/161,988.74 - Step 6: Final answer
x = 83,086.65
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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.