Finding the Fourth Proportional to 130,545.23, 180,138.84 and 76,827.04
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Solution
The fourth proportional to 130,545.23, 180,138.84 and 76,827.04 is: 106,013.32
Step by Step Solution
- Step 1: Write the proportion equation
130,545.23 : 180,138.84 = 76,827.04 : x - Step 2: Convert to fraction form
130,545.23/180,138.84 = 76,827.04/x - Step 3: Cross multiply
130,545.23x = 180,138.84 × 76,827.04 - Step 4: Simplify right side
130,545.23x = 13,839,533,866.23 - Step 5: Solve for x
x = 13,839,533,866.23/130,545.23 - Step 6: Final answer
x = 106,013.32
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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.