Finding the Fourth Proportional to 138,438,124.90, 207,657,187.35 and 138,438,124.90
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Solution
The fourth proportional to 138,438,124.90, 207,657,187.35 and 138,438,124.90 is: 207,657,187.35
Step by Step Solution
- Step 1: Write the proportion equation
138,438,124.90 : 207,657,187.35 = 138,438,124.90 : x - Step 2: Convert to fraction form
138,438,124.90/207,657,187.35 = 138,438,124.90/x - Step 3: Cross multiply
138,438,124.90x = 207,657,187.35 × 138,438,124.90 - Step 4: Simplify right side
138,438,124.90x = 28,747,671,638,742,000 - Step 5: Solve for x
x = 28,747,671,638,742,000/138,438,124.90 - Step 6: Final answer
x = 207,657,187.35
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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.