Finding the Fourth Proportional to 137,595,207.78, 189,878,984.06 and 74,869,189.65
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Solution
The fourth proportional to 137,595,207.78, 189,878,984.06 and 74,869,189.65 is: 103,318,174.35
Step by Step Solution
- Step 1: Write the proportion equation
137,595,207.78 : 189,878,984.06 = 74,869,189.65 : x - Step 2: Convert to fraction form
137,595,207.78/189,878,984.06 = 74,869,189.65/x - Step 3: Cross multiply
137,595,207.78x = 189,878,984.06 × 74,869,189.65 - Step 4: Simplify right side
137,595,207.78x = 14,216,085,667,763,122 - Step 5: Solve for x
x = 14,216,085,667,763,122/137,595,207.78 - Step 6: Final answer
x = 103,318,174.35
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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.