Finding the Fourth Proportional to 138,900.07, 191,681.44 and 75,237.99
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Solution
The fourth proportional to 138,900.07, 191,681.44 and 75,237.99 is: 103,828.07
Step by Step Solution
- Step 1: Write the proportion equation
138,900.07 : 191,681.44 = 75,237.99 : x - Step 2: Convert to fraction form
138,900.07/191,681.44 = 75,237.99/x - Step 3: Cross multiply
138,900.07x = 191,681.44 × 75,237.99 - Step 4: Simplify right side
138,900.07x = 14,421,726,265.91 - Step 5: Solve for x
x = 14,421,726,265.91/138,900.07 - Step 6: Final answer
x = 103,828.07
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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.