Finding the Fourth Proportional to 150,366,931.18, 207,549,612.12 and 90,818,768.62
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Solution
The fourth proportional to 150,366,931.18, 207,549,612.12 and 90,818,768.62 is: 125,356,021.12
Step by Step Solution
- Step 1: Write the proportion equation
150,366,931.18 : 207,549,612.12 = 90,818,768.62 : x - Step 2: Convert to fraction form
150,366,931.18/207,549,612.12 = 90,818,768.62/x - Step 3: Cross multiply
150,366,931.18x = 207,549,612.12 × 90,818,768.62 - Step 4: Simplify right side
150,366,931.18x = 18,849,400,200,297,028 - Step 5: Solve for x
x = 18,849,400,200,297,028/150,366,931.18 - Step 6: Final answer
x = 125,356,021.12
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1.5x scale
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.