Finding the Fourth Proportional to 130,804.76, 180,545.09 and 77,125.54
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Solution
The fourth proportional to 130,804.76, 180,545.09 and 77,125.54 is: 106,453.59
Step by Step Solution
- Step 1: Write the proportion equation
130,804.76 : 180,545.09 = 77,125.54 : x - Step 2: Convert to fraction form
130,804.76/180,545.09 = 77,125.54/x - Step 3: Cross multiply
130,804.76x = 180,545.09 × 77,125.54 - Step 4: Simplify right side
130,804.76x = 13,924,636,272.25 - Step 5: Solve for x
x = 13,924,636,272.25/130,804.76 - Step 6: Final answer
x = 106,453.59
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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.