Finding the Fourth Proportional to 86,510.18, 119,206.86 and 63,813.20
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Solution
The fourth proportional to 86,510.18, 119,206.86 and 63,813.20 is: 87,931.52
Step by Step Solution
- Step 1: Write the proportion equation
86,510.18 : 119,206.86 = 63,813.20 : x - Step 2: Convert to fraction form
86,510.18/119,206.86 = 63,813.20/x - Step 3: Cross multiply
86,510.18x = 119,206.86 × 63,813.20 - Step 4: Simplify right side
86,510.18x = 7,606,971,198.55 - Step 5: Solve for x
x = 7,606,971,198.55/86,510.18 - Step 6: Final answer
x = 87,931.52
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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.