Finding the Fourth Proportional to 126,330,897.60, 189,496,346.40 and 77,225,749.20
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Solution
The fourth proportional to 126,330,897.60, 189,496,346.40 and 77,225,749.20 is: 115,838,623.80
Step by Step Solution
- Step 1: Write the proportion equation
126,330,897.60 : 189,496,346.40 = 77,225,749.20 : x - Step 2: Convert to fraction form
126,330,897.60/189,496,346.40 = 77,225,749.20/x - Step 3: Cross multiply
126,330,897.60x = 189,496,346.40 × 77,225,749.20 - Step 4: Simplify right side
126,330,897.60x = 14,633,997,321,402,724 - Step 5: Solve for x
x = 14,633,997,321,402,724/126,330,897.60 - Step 6: Final answer
x = 115,838,623.80
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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.