Finding the Fourth Proportional to 120,110,947.80, 180,166,421.70 and 69,092,611.80
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Solution
The fourth proportional to 120,110,947.80, 180,166,421.70 and 69,092,611.80 is: 103,638,917.70
Step by Step Solution
- Step 1: Write the proportion equation
120,110,947.80 : 180,166,421.70 = 69,092,611.80 : x - Step 2: Convert to fraction form
120,110,947.80/180,166,421.70 = 69,092,611.80/x - Step 3: Cross multiply
120,110,947.80x = 180,166,421.70 × 69,092,611.80 - Step 4: Simplify right side
120,110,947.80x = 12,448,168,633,913,194 - Step 5: Solve for x
x = 12,448,168,633,913,194/120,110,947.80 - Step 6: Final answer
x = 103,638,917.70
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1.5x scale
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.