Finding the Fourth Proportional to 138,602,437.80, 207,903,656.70 and 132,225,145.80
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Solution
The fourth proportional to 138,602,437.80, 207,903,656.70 and 132,225,145.80 is: 198,337,718.70
Step by Step Solution
- Step 1: Write the proportion equation
138,602,437.80 : 207,903,656.70 = 132,225,145.80 : x - Step 2: Convert to fraction form
138,602,437.80/207,903,656.70 = 132,225,145.80/x - Step 3: Cross multiply
138,602,437.80x = 207,903,656.70 × 132,225,145.80 - Step 4: Simplify right side
138,602,437.80x = 27,490,091,319,510,644 - Step 5: Solve for x
x = 27,490,091,319,510,644/138,602,437.80 - Step 6: Final answer
x = 198,337,718.70
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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.