Finding the Fourth Proportional to 130,488.36, 180,065.41 and 76,762.99
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Solution
The fourth proportional to 130,488.36, 180,065.41 and 76,762.99 is: 105,927.91
Step by Step Solution
- Step 1: Write the proportion equation
130,488.36 : 180,065.41 = 76,762.99 : x - Step 2: Convert to fraction form
130,488.36/180,065.41 = 76,762.99/x - Step 3: Cross multiply
130,488.36x = 180,065.41 × 76,762.99 - Step 4: Simplify right side
130,488.36x = 13,822,359,267.18 - Step 5: Solve for x
x = 13,822,359,267.18/130,488.36 - Step 6: Final answer
x = 105,927.91
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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.