Finding the Fourth Proportional to 156,548,439.69, 216,039,448.65 and 85,990,573.99
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Solution
The fourth proportional to 156,548,439.69, 216,039,448.65 and 85,990,573.99 is: 118,668,421.29
Step by Step Solution
- Step 1: Write the proportion equation
156,548,439.69 : 216,039,448.65 = 85,990,573.99 : x - Step 2: Convert to fraction form
156,548,439.69/216,039,448.65 = 85,990,573.99/x - Step 3: Cross multiply
156,548,439.69x = 216,039,448.65 × 85,990,573.99 - Step 4: Simplify right side
156,548,439.69x = 18,577,356,193,896,628 - Step 5: Solve for x
x = 18,577,356,193,896,628/156,548,439.69 - Step 6: Final answer
x = 118,668,421.29
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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.