Finding the Fourth Proportional to 117,875.42, 162,681.95 and 66,201.02
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Solution
The fourth proportional to 117,875.42, 162,681.95 and 66,201.02 is: 91,365.20
Step by Step Solution
- Step 1: Write the proportion equation
117,875.42 : 162,681.95 = 66,201.02 : x - Step 2: Convert to fraction form
117,875.42/162,681.95 = 66,201.02/x - Step 3: Cross multiply
117,875.42x = 162,681.95 × 66,201.02 - Step 4: Simplify right side
117,875.42x = 10,769,711,025.59 - Step 5: Solve for x
x = 10,769,711,025.59/117,875.42 - Step 6: Final answer
x = 91,365.20
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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.