Finding the Fourth Proportional to 130,947.24, 180,709.74 and 74,358.84
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Solution
The fourth proportional to 130,947.24, 180,709.74 and 74,358.84 is: 102,616.65
Step by Step Solution
- Step 1: Write the proportion equation
130,947.24 : 180,709.74 = 74,358.84 : x - Step 2: Convert to fraction form
130,947.24/180,709.74 = 74,358.84/x - Step 3: Cross multiply
130,947.24x = 180,709.74 × 74,358.84 - Step 4: Simplify right side
130,947.24x = 13,437,366,643.10 - Step 5: Solve for x
x = 13,437,366,643.10/130,947.24 - Step 6: Final answer
x = 102,616.65
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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.