Finding the Fourth Proportional to 138,833,005.80, 208,249,508.70 and 103,001,197.80
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Solution
The fourth proportional to 138,833,005.80, 208,249,508.70 and 103,001,197.80 is: 154,501,796.70
Step by Step Solution
- Step 1: Write the proportion equation
138,833,005.80 : 208,249,508.70 = 103,001,197.80 : x - Step 2: Convert to fraction form
138,833,005.80/208,249,508.70 = 103,001,197.80/x - Step 3: Cross multiply
138,833,005.80x = 208,249,508.70 × 103,001,197.80 - Step 4: Simplify right side
138,833,005.80x = 21,449,948,837,361,520 - Step 5: Solve for x
x = 21,449,948,837,361,520/138,833,005.80 - Step 6: Final answer
x = 154,501,796.70
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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.