Finding the Fourth Proportional to 122,787,103.48, 169,445,163.54 and 67,781,779
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Solution
The fourth proportional to 122,787,103.48, 169,445,163.54 and 67,781,779 is: 93,538,281.32
Step by Step Solution
- Step 1: Write the proportion equation
122,787,103.48 : 169,445,163.54 = 67,781,779 : x - Step 2: Convert to fraction form
122,787,103.48/169,445,163.54 = 67,781,779/x - Step 3: Cross multiply
122,787,103.48x = 169,445,163.54 × 67,781,779 - Step 4: Simplify right side
122,787,103.48x = 11,485,294,627,687,138 - Step 5: Solve for x
x = 11,485,294,627,687,138/122,787,103.48 - Step 6: Final answer
x = 93,538,281.32
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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.