Finding the Fourth Proportional to 90,798,139.80, 136,197,209.70 and 74,854,909.80
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Solution
The fourth proportional to 90,798,139.80, 136,197,209.70 and 74,854,909.80 is: 112,282,364.70
Step by Step Solution
- Step 1: Write the proportion equation
90,798,139.80 : 136,197,209.70 = 74,854,909.80 : x - Step 2: Convert to fraction form
90,798,139.80/136,197,209.70 = 74,854,909.80/x - Step 3: Cross multiply
90,798,139.80x = 136,197,209.70 × 74,854,909.80 - Step 4: Simplify right side
90,798,139.80x = 10,195,029,847,105,184 - Step 5: Solve for x
x = 10,195,029,847,105,184/90,798,139.80 - Step 6: Final answer
x = 112,282,364.70
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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.