Finding the Fourth Proportional to 130,802.14, 180,501.51 and 74,216.62
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Solution
The fourth proportional to 130,802.14, 180,501.51 and 74,216.62 is: 102,415.85
Step by Step Solution
- Step 1: Write the proportion equation
130,802.14 : 180,501.51 = 74,216.62 : x - Step 2: Convert to fraction form
130,802.14/180,501.51 = 74,216.62/x - Step 3: Cross multiply
130,802.14x = 180,501.51 × 74,216.62 - Step 4: Simplify right side
130,802.14x = 13,396,211,977.10 - Step 5: Solve for x
x = 13,396,211,977.10/130,802.14 - Step 6: Final answer
x = 102,415.85
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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.