Finding the Fourth Proportional to 135,312.36, 186,726.44 and 74,885.54
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Solution
The fourth proportional to 135,312.36, 186,726.44 and 74,885.54 is: 103,339.49
Step by Step Solution
- Step 1: Write the proportion equation
135,312.36 : 186,726.44 = 74,885.54 : x - Step 2: Convert to fraction form
135,312.36/186,726.44 = 74,885.54/x - Step 3: Cross multiply
135,312.36x = 186,726.44 × 74,885.54 - Step 4: Simplify right side
135,312.36x = 13,983,110,291.68 - Step 5: Solve for x
x = 13,983,110,291.68/135,312.36 - Step 6: Final answer
x = 103,339.49
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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.