Finding the Fourth Proportional to 90,365,901.60, 135,548,852.40 and 84,130,327.20
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Solution
The fourth proportional to 90,365,901.60, 135,548,852.40 and 84,130,327.20 is: 126,195,490.80
Step by Step Solution
- Step 1: Write the proportion equation
90,365,901.60 : 135,548,852.40 = 84,130,327.20 : x - Step 2: Convert to fraction form
90,365,901.60/135,548,852.40 = 84,130,327.20/x - Step 3: Cross multiply
90,365,901.60x = 135,548,852.40 × 84,130,327.20 - Step 4: Simplify right side
90,365,901.60x = 11,403,769,303,996,506 - Step 5: Solve for x
x = 11,403,769,303,996,506/90,365,901.60 - Step 6: Final answer
x = 126,195,490.80
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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.