Finding the Fourth Proportional to 156,980,606.61, 216,633,237.68 and 87,382,428.99
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Solution
The fourth proportional to 156,980,606.61, 216,633,237.68 and 87,382,428.99 is: 120,587,752.31
Step by Step Solution
- Step 1: Write the proportion equation
156,980,606.61 : 216,633,237.68 = 87,382,428.99 : x - Step 2: Convert to fraction form
156,980,606.61/216,633,237.68 = 87,382,428.99/x - Step 3: Cross multiply
156,980,606.61x = 216,633,237.68 × 87,382,428.99 - Step 4: Simplify right side
156,980,606.61x = 18,929,938,508,009,480 - Step 5: Solve for x
x = 18,929,938,508,009,480/156,980,606.61 - Step 6: Final answer
x = 120,587,752.31
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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.