Finding the Fourth Proportional to 128,688,177.14, 193,030,580.91 and 31,644,722.42
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Solution
The fourth proportional to 128,688,177.14, 193,030,580.91 and 31,644,722.42 is: 47,466,669.33
Step by Step Solution
- Step 1: Write the proportion equation
128,688,177.14 : 193,030,580.91 = 31,644,722.42 : x - Step 2: Convert to fraction form
128,688,177.14/193,030,580.91 = 31,644,722.42/x - Step 3: Cross multiply
128,688,177.14x = 193,030,580.91 × 31,644,722.42 - Step 4: Simplify right side
128,688,177.14x = 6,108,399,151,468,301 - Step 5: Solve for x
x = 6,108,399,151,468,301/128,688,177.14 - Step 6: Final answer
x = 47,466,669.33
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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.