Finding the Fourth Proportional to 139,968,457.30, 209,952,685.95 and 126,363,567.70
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Solution
The fourth proportional to 139,968,457.30, 209,952,685.95 and 126,363,567.70 is: 189,545,351.55
Step by Step Solution
- Step 1: Write the proportion equation
139,968,457.30 : 209,952,685.95 = 126,363,567.70 : x - Step 2: Convert to fraction form
139,968,457.30/209,952,685.95 = 126,363,567.70/x - Step 3: Cross multiply
139,968,457.30x = 209,952,685.95 × 126,363,567.70 - Step 4: Simplify right side
139,968,457.30x = 26,530,370,444,839,664 - Step 5: Solve for x
x = 26,530,370,444,839,664/139,968,457.30 - Step 6: Final answer
x = 189,545,351.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.