Finding the Fourth Proportional to 85,412,140.10, 128,118,210.15 and 84,615,877.70
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Solution
The fourth proportional to 85,412,140.10, 128,118,210.15 and 84,615,877.70 is: 126,923,816.55
Step by Step Solution
- Step 1: Write the proportion equation
85,412,140.10 : 128,118,210.15 = 84,615,877.70 : x - Step 2: Convert to fraction form
85,412,140.10/128,118,210.15 = 84,615,877.70/x - Step 3: Cross multiply
85,412,140.10x = 128,118,210.15 × 84,615,877.70 - Step 4: Simplify right side
85,412,140.10x = 10,840,834,801,195,300 - Step 5: Solve for x
x = 10,840,834,801,195,300/85,412,140.10 - Step 6: Final answer
x = 126,923,816.55
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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.