Finding the Fourth Proportional to 133,237.18, 183,866.93 and 72,808.21
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Solution
The fourth proportional to 133,237.18, 183,866.93 and 72,808.21 is: 100,475.12
Step by Step Solution
- Step 1: Write the proportion equation
133,237.18 : 183,866.93 = 72,808.21 : x - Step 2: Convert to fraction form
133,237.18/183,866.93 = 72,808.21/x - Step 3: Cross multiply
133,237.18x = 183,866.93 × 72,808.21 - Step 4: Simplify right side
133,237.18x = 13,387,021,314.18 - Step 5: Solve for x
x = 13,387,021,314.18/133,237.18 - Step 6: Final answer
x = 100,475.12
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1.5x scale
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.